You won't believe this:
I booted into Safe mode Minimal, none of my tray gadgets started ✓ Started 8.2.1 portable with the Demo Library. The ≡ ley on Author, Tags, and Publisher in all 3 books popped the short (bad) menu… but the long (good) menu on Ids: Google.
Booted into Normal mode - the ≡ key on Tags (History) in the two Morley books was showing the short (bad) menu, but on Tags (Classic) in the Tolstoy it was showing the long (good) menu.
So I added a Tag (Westminster Parliament) to the Edmund Burke book, guess what - press the ≡ key on it shows the long (good) menu, but "History" continues to show the short (bad) menu. Here are the screen shots:
And if I change a "History" Tag to "Political History" the ≡ key on it pops the long (good) menu.
BR 😕

🤒