probably because the update was just released today and whatever setting your program is checking is out of date.
just download the update from the filemaker website.
What I would be interested in is "What does the update do on the Windows side?" The updater details only mention OS X.
Perfect! I have not yet installed... What about values list, fields list and lists in general when miss the focus/positioning on selected value? Actually it's annoying with 13v4.