There were numerous threads about key binding wonkiness after the 11 & 12 (I believe I'm right) updates.
Check this one out
hereHas to do with the the location of the synth browser.
FWIW; I held back updating the Studio rig until recently (was on 2016.09).
I think you can safely move on the 2017.02 at this point with "minimal" issues.
I would say "no" issues, but I did have some
VST Scan problems; got it working though.
HTH,
T