Thank you for your feedback
I planned to block the resizing option but simple forgot. This cursor appearance and not scaling texture are caused by that.
I haven't really thought about deactivating window, either. This bug really went under my radar.
I personally think that disabling collisions is a nice feature, but it definitely should've been implemented on button press and not on window deactivation.
and yeah 1.5% increase of speed after each bounce of the ball is a little crazy :P
Oh and I really need to investigate this cursor loading