Sometimes it happens when travelling away from roads that companions can't walk the terrain the player is walking over. Currently my companion is stuck in a way so that no trick works to make her follow me again. I tried ordering to wait and then to follow, i tried to send her home, i tried to give her order "wait there" but nothing makes her move. The only way to get her unstuck is using a coach ride between cities. This happened actually more than once lately.
I had the same happen with a horse (i think). I was busy in the NE corner near Winterhold in the water. Some bears attacked me and i didn't see my horse run away but after the attack the horse was gone. I fear it's stuck somewhere under water.I think if it would have died for some reason it would respawn at Whiterun (was the Whiterun horse).
Companions, dogs and horses which are stuck should automatically return home after a couple game days or the reasons why they are stuck should be investigated and fixed.
2. Selecting menu options
Highlighting of options in dialog menus still doesn't really work satisfyingly. You click on an option and another option (the one which is still falsely highlighted) gets executed. Not very smart. This is especially annoying when trying to trade items with a companion but constantly another option is executed. When using the scroll wheel of the mouse often the menu option under the cursor is NOT highlighted (which causes this bug), only moving the mouse highlights the desired option.
