I had been adding Factbook tags since I opened the program. I had run into problems with the Lexham Bible Dictionary refusing to show Factbook tags but simply moved on to other resources which worked as expected. Then when I was working in Burke, Tony, ed. New Testament Apocrypha: More Noncanonical Scriptures. Vol. 2. Grand Rapids, MI: William B. Eerdmans Publishing Company, 2020. only to have the resource suddenly fail to show the underlining or the Factbook popup - but show the tag in the Context Menu. Both the underlining and hover behavior are as expected earlier in the tool. I gave it 15 minutes ... still a no show. I close and reopen the application, and the underlining and hover popups work as expected. I took this screen shot and logs when I shut down with them not showing.

5023.Verbum drop tag.zip
Yes, I have reported what is probably the same issue - but with different timings on the dump and screen shots showing symptoms.