Version 0.8.5-12 of preview.app is marked for autoremoval from testing on Sun 15 Dec 2024. It depends (transitively) on gnustep-gui, affected by #1086562. You should try to prevent the removal by fixing these RC bugs.
Among the 3 debian patches
available in version 0.8.5-12 of the package,
we noticed the following issues:
3 patches
where the metadata indicates that the patch has not yet been forwarded
upstream. You should either forward the patch upstream or update the
metadata to document its real status.