WER on Linux
One additional bug that I thought had gone away, but which I saw again on Prerelease weekend:
Sometimes, for no reason I can ascertain, WER will take all input from the number row (I didn't have a keypad on the machine in question) as if the shift key is pressed. i.e. % instead of 5. Pressing shift or caps lock does not change this, and the keyboard responds correctly in other programs. The only solution I have found is to completely close WER - all windows, including the timer - and restart.
Happens infrequently, but is annoying when it does.