I have "toggle-symbol" bound to Ctrl+Alt+Y. If I use this keyboard sequence, the Preview window appears with focus; I can press Esc to get focus back to the edit window. However, if I use this keyboard sequence, and then immediately use it again to deactivate the Preview window (without pressing Esc), the window disappears, but the cursor (and keyboard focus) does not go back to the edit window. In fact, even switching to another application and coming back doesn't bring it back. I have to either click with the mouse, or press Alt+X to bring up the command line, and the remove the command line to get the cursor back.