1. Make a new tab.
2. Press ctrl-tab. Nothing happens.
3. Click the original tab.
4. Press ctrl-tab. It changes tabs like it should.
5. Press ctrl-tab again (now that you've been moved back to the blank tab). Nothing happens again.
6. Click 'music' (or anything else) in the navigator.
7. Press ctrl-tab. It now works, now that the current tab is no longer empty.