Parallel Resource Bug

I have created a custom collection for the NT commentaries I prefer to use while studying. I have recently tried (again) using parallel resources and R/L arrows to move between them rather than having a copy of each open and I consistently run into the same problem. When I first open my layout and start using my commentaries, R/L arrows will cycle through all of my commentaries in my library for a given verse, even though I set up the layout with a much more limited parallel resource collection checked. Once I click on the parallel resource button and Logos gets around to showing the drop down, the parallel resource collection is checked and after that it functions as expected/intended. But it will not do that until I go to that parallel resource drop town the first time. 

It seems to me that this is a bug, that the software should recognize that a book is in a parallel resource collection without me having to tell it every time I open Logos to study. This has been a reminder on why I quit using parallel resource collections before and went to having lots of tabs. :-/ I don't use L5 on Windows so I cannot say whether the problem is unique to L5M or happens on both platforms. 

OSX 10.7.5; Logos 5.0b SR-2 (5.02.0743)

(update) - apparently Logos does not even always remember the parallel resource collection after clicking the drop down, I just had to redo the drop down/reminder even though I had just done it a few minutes ago. I think it is back to tabs for me until this gets fixed.