The original topic encountered a weird database issue which meant any post on the third page couldn't be viewed. If your bug was recently posted in the old topic, and isn't on the list below, feel free to re post it.

Critical Bugs are defined as bugs that need fixing, right now. Seriously. These are bugs that make user plugins utterly useless, breaking them and causing major errors in game.
Major Bugs are defined as bugs in which functionality is broken in such a way that there is no effective solution, or the solution is far from ideal. Also includes bugs which can affect user plugins and cause errors in game.
Medium Bugs are defined as bugs in which functionality is broken, however where there are workarounds available in order to circumvent the issue. Also includes repeatable crashes and issues which require a restart of the CK.
Minor Bugs are defined as bugs which are more of an annoyance than a hindrance. These include bugs which are easily fixable and don't negatively affect user plugins.

Bugs http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/ have more information available about the issue. Clicking on the link will take you to a post or topic where the bug is described in more detail.
Bugs highlighted yellow are issues which have been acknowledged by Bethesda, however which a fix has not been confirmed.
Bugs highlighted orange are issues which have been acknowledged by Bethesda, and have also confirmed to have a fix in the works.
Bugs highlighted green with a strikethrough are issues which have been fixed by Bethesda in a patch.
Bugs highlighted red are issues which have been acknowledged by Bethesda, however where it has been confirmed that the issue won't be fixed in the foreseeable future.

http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/ denotes a link to the post where the bug has been acknowledged by Bethesda.

There are numerous bug topics all over the Creation Kit forum, and these get lost so quickly amongst all the general questions and advice topics. Like the Unofficial Skyrim Bugs topic, my aim is to have a centralised topic where we can list the bugs in order for the devs to see, and hopefully fix. When posting a bug, categorise it into one of three levels: Major Priority, Medium Priority and Minor Priority. This will make it easy to differentiate between a mod-breaking bug, and one where it's only a minor issue. If the issue is linked, it means there's a topic or post that explains the bug in more detail.

Critical Bugs

• http://www.gamesas.com/topic/1345681-navmesh-bug/ http://www.gamesas.com/topic/1345681-navmesh-bug/page__view__findpost__p__20341090
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20325586 http://www.gamesas.com/topic/1343692-color-mismatch-facebody/page__view__findpost__p__20260843
  
• http://www.gamesas.com/topic/1344939-things-disappearing-in-the-world/page__st__30
  
• http://www.gamesas.com/topic/1345519-creating-new-worldspaceshow-to-get-around-the-broken-ck-features/
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20321917 http://www.gamesas.com/topic/1351453-gamebreaking-bug-for-worldspaces-bigger-than-4-quads-in-width-thread-2/page__view__findpost__p__20376830 http://www.gamesas.com/topic/1351453-gamebreaking-bug-for-worldspaces-bigger-than-4-quads-in-width-thread-2/page__view__findpost__p__20385300

Major Bugs

• http://www.gamesas.com/topic/1348239-creating-new-worldspacesdiscussion-thread-3/
  
• http://www.gamesas.com/topic/1348321-2nd-scene-troubles-dialogue-wont-fire/
  
• http://www.gamesas.com/topic/1351617-4-bug-reports-ctd-game-always-looks-for-music-in-the-last-esm-in-the-loadorder-2-ck-crashes-and-1-assert/
  
• http://www.gamesas.com/topic/1345124-bethesda-can-we-add-actor-values-and-modify-perk-trees/
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20284802
  
• http://www.gamesas.com/topic/1348833-old-versions-of-mods-conflicting-with-newer-ones/
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20284843
  
• http://www.gamesas.com/topic/1348239-creating-new-worldspacesdiscussion-thread-3/
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20283919
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20290500
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20303115
  
• Moving or rotating any marker (x marker, coc marker, roombounds etc) that's been added in the current plugin (i.e. doesn't have a mod index of 00) doesn't cause the Creation Kit to mark the plugin as changed (* tag). Therefore it seems as if it's saved when in reality your changes will be lost on exit. The CK doesn't even notify you if the plugin should be saved, it just closes without any prompts, causing you to lose any changes made.
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20315345
  
• http://www.gamesas.com/topic/1348553-deleted-objects-show-up-near-00-in-tamriel-worldspace/
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20329939
  
• http://www.gamesas.com/topic/1348132-is-it-possible-to-attach-a-script-to-an-actor-base/
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20382957

Medium Bugs

• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20282169
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20282169
  
• Duplicating a cell will mark the original cell as modified, give it a *, adding a dirty record to the active file.
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20282169.
  
• Havok seems to change speed wildly randomly. This makes it difficult to position things accurately (for example, a dead actor hanging off the top of a wall. He'll fall so fast (less than a second) that you don't have time to adjust him).
  
• http://www.gamesas.com/topic/1345089-ck-steamworks-upload-bug-report-bethesda-please/ http://www.gamesas.com/topic/1345089-ck-steamworks-upload-bug-report-bethesda-please/page__view__findpost__p__20273607
  
• Statics in random exterior cells become invisible in the CK, but still selectable. The worldspace needs to be re-loaded in order for them to appear again.
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292075
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20291504
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293273
  
• http://www.gamesas.com/topic/1346664-topic-info-scripts-non-unique-names/
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20302041
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20302527
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20367809
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20302878
  
• http://www.gamesas.com/topic/1346833-how-do-i-make-an-activator/
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292446
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292446
  
• http://www.gamesas.com/topic/1346621-dummy-items-issue/
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20306540
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20308842
  
• The CK often crashes randomly, usually without reason (for example, while being idle or testing mods ingame).
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20359881
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20368435
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20381609

Minor Bugs

• http://www.gamesas.com/topic/1345462-resizing-the-ck-windows-theyre-too-big/
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20281388
  
• Opening a perk with multiple perk entries will cause the perk entries to change order on edit.
  
• http://www.gamesas.com/topic/1345526-removing-grass/
  
• Skyrim.esm is full of errors. While these are harmless, it can make genuine errors from your own plugins difficult to spot.
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20289422
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20290971
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20291390
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292348
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292446
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292446
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20292726
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293082
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293082
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293273
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293299
  
• http://www.gamesas.com/topic/1345715-unofficial-creation-kit-bug-list/page__view__findpost__p__20293353
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20302234
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20304767
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20312595
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20316439
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20329138
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20329192
  
• Actors who have the "Starts Dead" flag enabled will often have stretched out arms in the CK when the cell is reloaded.
  
• As scripts are now handled externally by Papyrus, the "Scripts" tab under Find Text is no longer functional.
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20358935
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20382558
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20382957
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20382957
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20383167
  
• http://www.gamesas.com/topic/1347249-unofficial-creation-kit-bug-list-2/page__view__findpost__p__20384584

Your link in your sig still points to the bugged out thread, fyi.

IMO, the navmesh, heightmap, and disappearing objects in game world, are something I wouldn't mind them fixing, over all the others. Especially the navmesh bug.

Nevermind. All of them XD.

A bug on a topic about bugs... Ironic eh? Think the Devs are trying to tell us something?

EDIT: Snip. Missed it. Already there

Ah, wasn't just me then. Rather ironic.

Medium:
Editing an unrendered ref. (ie load the CK and ESMs, single-click any cell on the left, right click a ref., Edit, change a value) results in an assertion error:
Assert:
File C:\_Skyrim\TESV\TES Shared\FileIO\TESDataHandler.cpp
Line: 1663
TESDataHandler::GetFromCellCoord:NULL worldspace.


I seem to remember that TESCS could do this just fine.

I think my post got lost in the last thread:
Not sure what category it is, kind of inconvenient for mods without voice acting, but not really game breaking?

Added.
Fixed

Thus explaining why my having checked that box seemed to do nothing. Oh well, at least it wasn't just me

I dunno if it's a bug but the fields for editing bodypart data like damagemult, etc. are grayed out. Locational damage would be cool..

There's a bug that has to do with dummy items not appearing ingame when configured correctly in the Creation Kit. I haven't been able to isolate this bug.

Adding any scripts to the ingredient "deathBell" results in a crash on game startup (Right past the Skyrim Logo appearing in the menu)

[PLEASE CONFIRM first. May just be me, but has happened across re installs, new plugins, etc.]


Edit:
and by any, I literally mean ANY.

Looks like the CK instantly crashes if you try to preview idle animations in a package (Package -> Idles -> Use Specific Idles -> New). CTD whenever a character to preview the animation on is selected. Does not seem to be dependant on specific characters or idles (although I only tried a handful combinations).

CK crashes upon creating a new quest and trying to save. Looks like the Papyrus fragments are screwing it up seeing as the fragment box is greyed out.

Confirmed, tested it with a mod that only added a Debug.Trace("blah")-script to deathbell, instant CTD on startup.

Awesome. Not just me. Man that one was a B!TCH to track down what was causing it.

You may want to reword this to "Almost everything with adding custom worldspace is just FUBAR." We are having SO many issues and I really wish Beth would step in and at least say something...

This isn't a Creation Kit bug per se, but it's definitely related, so I'll throw it on the heap for consideration:

Practically all of the debugging console commands/functions were compiled out of TESV.EXE and they still show up in the internal "help" results and do nothing.
Unfortunately, some of the official documentation on the creationkit.com Wiki still indicates to use these console commands/functions even though they (deliberately) don't work.

I can forgive any manner of bugs but to deliberately remove useful utilities makes me .

(For the naysayers: there are still enough commands left to completely bork your game if misused, so I doubt that was the reason.)

Curiously, could you give some examples? I'm about as amazed as you are if that's true.

http://www.creationkit.com/Room_Bounds_and_Portal_Basics (check the talk page.)

That's one in the Wiki like this, but as far as actual commands removed? Just about everything other than the basics. For example do a "help toggle 1" and >90% of the results are garbage.
Edit: SDT/TDT are the two most notice.

Wow, pretty unbelievable.

I'll add this as a major I think. As these commands are mentioned in the wiki, it's functionality that's been taken from us, intentional or not.

Any idea what the third party program might be? Seems like the bug also affects adding new music.

My guess would be http://www.uesp.net/wiki/Tes5Mod:SkyEdit.

Thanks.
it would be nice if installing the CK also installed a "developer build" of TESV.EXE with no deprecation of the console goodies... I know.... but I can dream, can't I?

Also I would say that it's only some commands not most that are in the Wiki. That was the first I ran into. Still shouldn't be any, of course!

---

Minor:
Check Portals and Rooms in View->Show/Hide Window and they show if markers are shown. Turn marker display off and they don't show. So far, so good...
However, load a cell or two and portal and room markers start showing again, even though no other markers do and Markers is still off. Marker display has to be turned on and then off again to make them go away.

Don't know if this is just something I'm doing wrong, or something wrong with the CK, but when I delete objects from the render window by selecting them and hitting the 'delete' key, they don't actually get deleted. They get centered in a big pile on what I can only assume is the grid center of the cell. The weirdest part of this is, they are no longer in the editor at all, they're only in a pile in-game.

If nobody has reported this yet, creating a plugin or modifying something in CK (in my case music data) if i try to close the program CK ask me correctly if i will save the changes before exit, but pressing "yes" button doesn't do anything more than closing the pop up window, if i try to exit, same story.. if i try to change data add another plugin, same story, saving and then trying to close CK result in that too.. Simply modifying just one thing makes sure that the CK do not allow me to exit anymore without giving in to save data before closing, and checking data details of the plugin there is nothing, it doesn't appear any voice to be modified