I don't use the dropdowns that much. In fact, I'm totally ignorant of their formation/intended-use.
Issue 1: Today's goal was to locate a Neofiti targum quote that a monograph had cited by translator; not targum. I figured it had to be in Genesis, and used a 'Books' search, which allows narrowing down by passage, if a Bible. That produced the curious dropdown (below copy):
- The reference has to be from BHS (I guess? Why BHS?). I short-typed 'Gen' and indeed BHS. So, I hoped for the best, being in a targum. I'm guessing the BHS related to the pericopes?
- Which then listed the total Bible as Gen-2Ch. Well, OK! Of course, BHS (which I rarely use) has 2Ch last. But no pericopes. Ok, anyway.

Issue 2: This one is more head-achy. On the Mac M1, latest OS, latest Verbum, on a Bible search, if I select the Passage drop down and select, authomatically, it pops open the topic dropdown for whatever I typed in the search textbox. Every time. If I didn't need it then, I don't need it now.
