Switch to full screen from Playlist shows black screen.

To reproduce:

1. Play a movie.
2. Press the "Show/Hide Playlist" button on the bottom.
3. While in the playlist you'll hear the movie still playing. Press the "Toggle Fullscreen mode" button on the bottom right (or command-f). VLC goes fullscreen, but completely black. You still hear the movie playing. This definitely happens on a Mac. I didn't test other platforms.