VLC plays video outside of main window

I'm using git version, and since two days or so, when I want to play a video, it is opened in a window, outside of the main one.

When I launch vlc using command line, I got these errors :

[0x2467ef8] qt4 interface error: Unable to load extensions module Fontconfig warning: FcPattern object size does not accept value "0" Fontconfig warning: FcPattern object size does not accept value "0" Fontconfig warning: FcPattern object size does not accept value "0" Fontconfig warning: FcPattern object size does not accept value "0" [0x7fb40c001248] main vout display error: Failed to resize display [0x7fb40c001db8] xcb_window window error: X server failure [0x7fb40c001248] main vout display error: Failed to resize display

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