FM Pro, I've been running it without issue, just get the latest updates. Also, there was an update for FM Server that addressed 10.10 compatibility.
Make sure you scroll down and read the section specific to Yosemite, but this update is working fine for me as well.
Been using FM13Adv and Yosemite for a couple of months now. No major issues, but there are some little quirks. The keyboard shortcuts that go missing, as mentioned by Todd above, is the most annoying. I know it isn't Yosemite specific, but I never ran into it with Mavericks, and I do now.
We have noticed that tool tips appear in gray now instead of yellow. Not a big deal, but they don't stand out as much.
Also seems to be a lot more "window flashing" than there used to be.
Probably some other little things, but that's what comes to mind.
We have a couple of clients running server 13.0.5 on Yosemite and haven't seen any problems.
I used FMPA13 and Yosemite for a couple of days in a training course.
Myself and one other person experienced a weird glitch with selecting scripts.
No problem at all
Working wit Yosemite en FM 13 and server version since november (15 users)