Twitch: "Hey, come back! This commercial break can't play while you're away."

https://lemmus.org/post/20477999

superuser.com/…/how-can-i-make-a-tab-in-firefox-f…

Looks like it’s a decade old problem and the solution isn’t super clean.

How can I make a tab in Firefox falsely believe that it still has the focus?

In Firefox I would like to pass to another tab while an ad is playing in the current tab, but the pesky thing will pause when its tab loses the focus. I would like to trick the ad to believe that it

Super User
A long time ago I took some online classes, and the teacher could see if the software used for the classes was not in focus. I used a VM to run it, and as long as it was in focus on the VM the VM didn’t have to be in focus itself
The solution is to not use the service.
There are multiple extensions that can keep a tab focused even if you are not looking at it.