Player keeps running until crashing while dragging one sprite over another

pm1891

So here's the latest issue I've run into. Many thanks to anyone willing to take a look at the attached file

I'm trying to drag one sprite containing a bunch of bitmaps over another sprite containing another bunch of bitmaps. As the sprite is dragged, it's child bitmaps are supposed to print something depending on the bitmaps contained in the other sprite.
Now the issue is they don't stop printing. Even after I stop dragging and the second sprite is deleted on mouse_up event. I have to start a new player. I don't know what the problem is. I'm on the verge of tearing my hair out.

Thanks.

oleg

Every frame is printed in you
print("still moving")
delete it