green screen when streaming on apple tv website from firefox app on android 10

I'm using the last version of Firefox App on my sony smartphone, when I watch a movie, at the begining (logo Apple + other movie announcement that I can ignore) it's all fine. But when the actual movie is reading, the picture is full of green pixels, I can hear the sound.

I reset firefox app: same problem

I tried other streaming platforms: no problem

I tried with google chrome: no problem

But for privacy reason, you may understand that I can't agree to use chrome.

I tried on firefox for PC windows 10: all fine.

Could you please fix this problem?

Thank you