ya know, if you log in too fast... that "sometimes", and I do mean rarely, when you click the button to broadcast mouse in all windows, will it not work for one or two.

What I do in those VERY RARE cases, is to
1. turn off the repeater.
2. do the window click swap for each window. I.e. If I am on window 1 of 5 total, I will click on 2, then 3, then 4, then 5, then back to 1.

After that the repeater works as intended. Again, this is VERY RARE, and to be blunt, I havent seen this hiccup / glitch since the last update.