Since upgrading to Parallels 9, title bars get hidden when windows are maximized in Windows 7. Like this: There should be a blue bar (since I use the Classic theme Windows 7) with the title "Control Panel" on it. This did not happen in Parallels 8. Running 9.0.23062.
I have had this problem for a while. Happens for me in both v8 and v9. Haven't found a solution, yet.
Any news about this issue, I have the same on prl 8 and prl 9. Both with XP or 7. It's really annoying.
from Google+: "We heard back from development and this issue you pointed out is being addressed in our next update. Thank you for bringing this to our attention and for being a customer." https://plus.google.com/u/0/103861167345611812134/posts/ULSvyczgbut
I'm still stuck with it, myself. I'm on Mavericks with dual monitors and I have noticed that this only happens on monitor 2. Maximized windows on monitor 1 work as expected.