Can't resize the main window as usual

[aitte]

Today the power went out as i was watching a 720p video, so the main window enlarged itself automatically to the 720p size as well.
I'd like the window to be at the 360p size (640×360 pixeis).
In VLC 2.x i used to fix this trouble by opening a 720p video, setting the size of the video to half and force quitting VLC.
In VLC 3.0.3 that doesn't work anymore, i tried tinkering with the "resize interface to the native video size" option but it doesn't work at all.
I'm using VLC 3.0.3 on a macbook pro, os x 10.9.5 Mavericks.
How can i restore the window to the previous size?

[aitte]

Never mind, I solved the trouble by opening some audio files and shirinking the window size to the minimum.
The solution was so easy, i feel stupid now