Got it fixed
Updated/Changed to 1.20RC1 - same problemI saved my config.g bed.g home, pause and resume files and put completly fresh files on the sd card
and still same problem. i tripple checked all files for spelling errors etc an wrote files from scratch but nothing helped
after that a friend said why dont you try mesh again just to see if that one works
i reenabled mesh in config.g (M557 X30:311 Y22:295 S20) ran it once and the problem was gone