digiKam 7.7.0 is missing translations in many places, although they have been translated. The Appimage version in particular is missing way more translations than the other versions. I've tested this bug with Simplified Chinese, which is always 100% translated these days. I've also looked at Spanish, which is also missing translations in the exact same places. I will attach some screenshots in the following comments.
Created attachment 150350 [details] digikam 7.7.0 is missing translations in Configure dialogue
Created attachment 150351 [details] digikam 7.7.0 is missing translations in Batch Queue plugin names
Created attachment 150352 [details] digikam 7.7.0 appimage is missing translations in its menus
Created attachment 150353 [details] digikam 7.7.0 appimage is missing translations in its toolbars
*** This bug has been marked as a duplicate of bug 454541 ***
Fixed with #454541