Controls window appears offscreen, becoming useless

[Xuerian]

Some point this year on Windows 10, most of the time the PIP control bar appears offscreen.

I can sometimes get it to show up once or twice by either reinstalling it, or by changing the vertical desktop offset of one of my monitors in windows.

Since there appear to be no hotkeys (eg Enter for capture and Esc for quit), this is a real bugger.