Was running into problems with browser-based videos not playing in the background. This popped up as a suggestion and I tried it with some hesitation. But, lo and behold, this fixed the problem right away.

You are a life saver

wow this works. thanks. Now I can turn on my phone display while m.youtube plays in BG

Why wasting money on buy YT Premium when you can use this add-on for free?
Support this add-on, support the openned web, support Firefox, my fellows.

One click fix!
S-tier!

●Works for me also when locking the phone.
●Going back to home screen.
●Minimizing panel in firefox.

Thank you!
S24 Ultra, One UI 8.0

Does what it says on the tin.