Doesn't hide system panel in fullscreen
When running xfce4 desktop session of Xubuntu system, VLC with custom skin interface doesn't overlap a system panel in a fullscreen view mode.
Native style goes to fullscreen as expected. Or in Ubuntu's Unity desktop environment any style interface as well.
Non of other apps has been seen in such behavior with xfce4 session.
This issue has long been known on linux forums but with no solution.
vlc 2.2.2+git20160728+r58820+56~ubuntu16.04.1 i386