I don't have a case number for this one as I was not contacted by SDL team for this one. Unlike my other problem with crashing during spellcheck.
For this one I was merely sharing my similar experience.
Below are the screenshots.
First, I thought I had added the term Order Form, but saw that it was not appearing in the term recognition. I was kind of sure because it was one of the basic terms.
Then I decided to add to my termbase, regardless, then it warned me saying it is already in the termbase. But, it was not visible in the term recognition.
When I saved it without joining the term, then I had two Order Form in my termbase and now both are appearing in the term recognition panel. If I had moved back and forth, then it would have appeared in the second visit to the segment
Additional both TM and Termbase results are very slow at loading. TB has around 100 terms. TM might be normal because I have around 8 TMs connected for this project.
Below are the screenshots
Hope it helps