The Windows mouse has a strange effect on the operation of the C64 keyboard...
Versatile Commodore Emulator
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blackystardust,
gpz
Thats intentional - when the mouse pointer crosses the window boundaries all currently pressed keys are released. I don't remember exactly why we did this - but not doing it caused all kinda of weird side effects (stuck keys mostly iirc)
Ok, I understand that there was no other way to do it. If so, you can close this ticket.