issue with App Designer and WindowButtonDown callback

Hello,

I need to display a point coordinate in a scatter plot, it works well, I just have to hover my cursor over it:

However, I also need to know my cursor's position when i clic, to do so I created a WindowButtonDown callback on the UIFigure.

But now my point's coordinate doesn't show anymore when I hover my mouse over it,

Do you have any idea where the problem can come from?

I recreated the issue in the attached file

Thank you for your help!