I just tested a new scene we created with a movie texture for the TV.
Scene with movie texture
It runs fine on a desktop browser. But when I test it on my iPhone (Safari Browser) after the scene is loaded the movie covers the screen and starts to run. It is not running as a texture on the TV screen as it should.
Video of video texture problem
The scene is self-hosted.
I just tested it on the Shapespark server. This is not a problem here.