kripkenstein: I wasn't sure whether "the fix" was solving the problem only for default size images or for all sizes.
Finaly I have found the cause for my problems: Disabling the two lines
Option "XAANoOffscreenPixmaps" "true"
Option "XaaOffscreenPixmaps" "false"
which were recommended before as a workaround fixes the issue for me for all zoom sizes.
Maybe there should be an additional fix for those who have this lines in their config?
kripkenstein: I wasn't sure whether "the fix" was solving the problem only for default size images or for all sizes.
Finaly I have found the cause for my problems: Disabling the two lines Pixmaps" "true" xmaps" "false"
Option "XAANoOffscreen
Option "XaaOffscreenPi
which were recommended before as a workaround fixes the issue for me for all zoom sizes.
Maybe there should be an additional fix for those who have this lines in their config?
tag: finally FIXED for me :)