If I have 2 active sessions (VNC over SSH and RDP) at the same time, then the keyboard output does not get sent correctly to one or the other.
If I have one session open, then it works fine. If I then open a second session, the keyboard input is not received on the new session, but either the other session or none at all. I have to switch back to the first session, and then minimize the window, and then the keyboard input works for the second session.
Furthermore, it doesn't happen all of the time, and I haven't been able to figure out what causes it to happen.
On a similar (keyboard related) note, the Cmd+` combination sometimes does not work to switch between active Remoter windows. It worked several versions ago, but it got broken somewhere in one of the betas before 1.0.7, and is still broken in the new beta 1.0.7B.