It's just something that they aren't paying attention too. That's all. We would need a good patch to Steam on Valve's part, along with a bit more preperation with update synchronizing on Bethesda's part. Hopefully we'll get the new CK tomorrow...
The next CK update probably isn't coming until next week. In the meantime, any mod that patch 1.8 breaks (and believe me, 1.8 DOES in fact break mods, particularly race overhaul mods) is hopelessly broken for the next few days.

This also means that if your mod uses Update.esm as a master, you can't work on that during the next few days, either.

Not without workarounds, anyway.
-Close the CK
-Open the game
-Update the game
-Open CK again
-Done!
You got that right. Try and open a file using Update.esm as a master, and the editor will crash.