Please help

Basically what I am trying to do is, 1) click on the square to make duplicate movies of the ball. 2) which can be dragged to the trash can, to be discarded, but the problem I’m having is that I when I hit the square after the first time I drag a ball to the trashcan, it appears on top of the trashcan, and not where I want it to, yet the next time I hit the button it’s fine.

TIA

Tom