I am having a really strange bug.

Whenever I am ingame, my action bar becomes unresponsive. To fix it, I have to go into the inventory, character screen, spell list, etc, and back out and then I can select stuff on the action bar for a bit but then it bugs out again.

This effectively makes using anything other than a melee/archer type character a pain in the ass.

I nailed the problem down to that when it happens, the game presses F8 for some reason (I noticed that when I had multiple characters selected and it'd always switch to the formation for that button). Tried running as admin and that didn't fix it.

Anyone had this problem or know what it could be?

Edit: I should mention that I have the widescreen mod installed, running at 1680x1050 resolution. However, I tried doing a fresh install without that mod and it was still there.

Edit2: Pressing F8 when it happens seems to fix it.