Hotkey just opens BetterTouchTool main window sometimes. At random. Usually it does what I programmed it to do (launch an Apple Shortcut). Other times, it just opens BTT. I have no idea how to begin debugging this.

Bugs or Unexpected Behavior
3

this is a bug Apple has added in a recent macOS version, you can find a workaround here:

I think it is fixed in macOS 26.6