Yeah it’s mentioned in the R58 release notes.
We’ve switched video playback to use Texture View by default which means no ugly black flash when changing videos within a layout. Unfortunately it seems some devices don’t like that for whatever reason.
There’s a patch for the 1.7.5 CMS linked in the release notes to turn TextureView off and Surface View back on (ie go back to R57 behaviour). If you’re running with a 1.8 CMS then I don’t think there’s a patch as it stands, so you’ll need to use R57 until there’s a CMS patch to change the Player setting.