First time I noticed this bug during a fight with bears in Whitestone Hollow. When combat started, the cursor icon changed from standard to the picture of ability (without aoe circle), and clicking on character portraits/abilities/enemies resulted in no response. However, I was able to swithch characters with keyboard, what caused change of the ability picture on the cursor to different one. Managed to force attack order when pointed to a bear and pushed attack button on my keyboard few times. Then I regained and lost control few times, but I have no idea how. After that I went to Dyrford to finish quest, where I made screenshot inside the mill. Problem occured again. Can't find cursor on the picture at all, but I swear it was on the closest Bleak Walker. Controls outside combat mode was fine.
Screenshot
Save, just in case.
output_log.txt
DxDiag.txt