This bug seems to be related to the use of the debian default desktop background (wallpaper). I love it, so I never tried to change it…
Using gnome-tweak-tool I realized that the path for the default wallpaper is /usr/share/images/desktop-base/joy.xml The XML points to four different SVGs for different screen resolutions. When I use gnome-tweak-tool to choose /usr/share/images/desktop-base/joy-wallpaper_1920x1080.svg directly I can't reproduce this issue. The same applies to using any other SVG, PNG oder JPG I tried. I can reproduce this issue simply by changing the path for the desktop background to /usr/share/images/desktop-base/joy.xml again. For now I'm going to reassign this bug to desktop-base. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org