deleteLater calls only once in libzip / libarchive plugins destructor
https://invent.kde.org/utilities/ark/-/blob/master/plugins/libzipplugin/libzipplugin.cpp#L66
This executes only once, for example open like 3k files zip archive with libzipplugin or libarchiveplugin and try reopening it again multiple times via menu "Archive -> Open recent". Probably something wrong with KJob or jobs.cpp file.