I am also having this bug now. I've tested all the known solutions and nothing seems to fix the issue. After restarting my computer the problem disappears for a total of about 5 minutes and then reappears in the middle of playing. The cursor doesn't lock to the screen, it just moves around in the background while playing. This is incredibly annoying and makes the game difficult if not impossible to play. As a PvPer, I am not going to be playing the game anymore until either a fix is found.
I am also having this bug now. I've tested all the known solutions and nothing seems to fix the issue. After restarting my computer the problem disappears for a total of about 5 minutes and then reappears in the middle of playing. The cursor doesn't lock to the screen, it just moves around in the background while playing. This is incredibly annoying and makes the game difficult if not impossible to play. As a PvPer, I am not going to be playing the game anymore until either a fix is found.