I experienced some unusual things when looking at commentaries in the passage guide.

The above screenshot shows on the left the commentary NDSB (together with many other commentaries) under the section "Commentaries" using my collection "Commentaries (Textual)". However, on the right, the commentary is not included in the collection "Commentaries (Textual)", which is correct.
If I don't sort the commentaries by "Era" but by "Priority", I have only one commentary listed:

It looks to me that depending on the sorting criteria, the collection rules get overlooked.