Synchronisation issue between two mcu

Hello Kevin,
Thank you very much for your reply!
Yeah the pictures could indicate this, but my measurements with the oscilloscope indicate that the step generation is not in sync.
Thanks for the tip with the graphics tool. And thanks for analyzing the log.

I have some good news, it seems to work now. The step signals of X and Y are now in sync and the toolhead is moving as it should.
I changed the following things (all at once):

I will revert each change step by step and test again to determine where the issue is coming from. Maybe this will help someone in the future.