It may be because I scaled the background image in inkscape. The now attached title has the image prescaled inserted from gimp and it works. Anyway this arouses still the question why the inkscape scaled one is only correct in the properties preview.
It may be because I scaled the background image in inkscape. The now attached title has the image prescaled inserted from gimp and it works. Anyway this arouses still the question why the inkscape scaled one is only correct in the properties preview.