Tested with RHL 8.0 and using sv_SE.UTF-8. The message "Add or Remove Packages" doesn't show up translated (see screenshot).
Created attachment 79717 [details] Screenshot showing untranslated message
*** Bug 76273 has been marked as a duplicate of this bug. ***
This is showing up translated for me now
RH 8 is not supported, and magicdev and s-c-p aren't shipped anymore. (Pirut replaced s-c-p.) Closing.