A Joplin situation that top-ranking tags are missing

BTW, I just noticed that in my Joplin app, the described tag problem occurs not only top-ranking section but "a few other places I happened to check on" in the whole tag system.

Am I looking at a strong odds to freshly uninstall and install the whole Joplin app? I have backup file reserved, I can import the backup file within 30 minutes, but, perhaps, you happen to know that does "Reupload local data to sync target" overwrite the cloud copy maybe (I am trying my best to find any possibility other than a scenario as you expressed in another thread)? I am imagining that will be an easier case for me if I have to start thing over, much easier than "Delete local data and re-download from sync target".