Keys getting stuck when grabbing the window

[Weeppiko]

If any key on the keyboard is being held when grabbing the window and then released while the window is still being grabbed, the key release will be completely missed and it will become stuck as if it is still being held until it is pressed again. This lead me to this situation where the X key got stuck and simply pressing CTRL was triggering CTRL+X, wiping all my code, before I could realize what actually happened, and being unable to undo the damage.