Incorrect numeric entrey - Entrée numérique incorrecte

Hello

I have a strange behavior/bug that greatly reduces my work rate as it appears regularly without me being able to solve it.
When I bread and want to use the eyedropper or the eraser, a window appears.
This window is difficult to get rid of, and I spend a lot of time clicking in different places to do so.
The message in this window is: “Incorrect numerical entry. An integer between 1 pixel and 5000 pixels is required” or ‘0% and 100% pixels’. (in fact, I have a french version with the message: "Entrée numérique incorrecte. Un nombre entier entre 1 pixel et 5000 pixels est requis" or "0% et 100% pixels")
I'm surprised that very few people mention this problem here,
Thanks for your help.
Vincent