Hmmm,
For a changed, the bug now appears in L5 for Windows, while it is now fixed (sort of) in L5 for Mac. This is the old thread http://community.logos.com/forums/p/51384/378542.aspx#378542
L5 for Window:
In the dropdown list, sometimes, the current collection (bolded) will appear as the last item in the list (like in L5 for Mac), however, most of the time the list will start from the first item of the dropdown list.
PS: After downloading my upgrade to Portfolio, I am revisiting all my 335 collections. Some of the things I did in the process are:
- reviewing to make sure my collection is still correct and relevant
- changing rules to better reflect my new additions, including dealing with exceptional cases
- renaming collections to better reflect my new additions
Now, having to re-scroll down each time from the top of the list, sort of took away some of the "shine" from Logos 5 for me 
However, I must be quick to add that I am still very pleased with Logos 5 
L5 for Mac (Request):
Can we have the current collection (bolded) appearing somewhere near the middle of the drop down list like in L4 for Windows? Instead of making it the last item.