hello, im having same issue since a couple of days ago, but not always (so maybe problem there before and i didnt see it before), it happends suddenly, some times video "break" images when OSD is up and dissapear when OSD is gone, others is just the contrary, video starts to show "broken" images, bands, jumps, flashes that stops when OSD is opened.
just stopping playback and starting again problem dissapear, have to say that for me, setting to EGL does make no difference
hardaware is orange pi3 lts, install is 12.0 "jernej ethernet patch"