Thanks for confirming

http://www.ventismedia.com/mantis/view.php?id=5239

Yes, exactly as you describe.

I also noticed that, if there is a track selected in the tracklist, when you hit Ctrl+Q, the track becomes unselected (same behavior as Ctrl+Space).

This hotkey seems to fail in any node other than the Now Playing node. To reproduce:

Go to Tools | Options | Hotkeys
Assign Ctrl+Q to "General: Focus tracklist on currently playing item"
Select some list of tracks to play.
Select a track that is not currently playing (not in Now Playing), hit Ctrl+Q. The selection is not made.
Go to Now Playing node, select a track not currently playing, hit Ctrl+Q. The selection is made.

Can anyone else confirm this?