Unfortunately, this didn't work for me on Archive,org borrowed books (after every so often, the website still asks me if I'm still there).

It used to work great. I don't know if it is because of Firefox or Facebook changes, but it just does not work on Facebook any longer.

very nice extension

Worked for one day only.

uBlock Origin -> My Filters
anysite.com##+js(aeld, /blur|focus|afterblur|mousemove|visibilitychange/)

I install this add-on only for one thing - to disable auto refreshing Facebook news feed. It work well! But when I found one side effects - you can't make posts on web version of Instagram. Always have a error "Your post could not be shared. Please try again". So sadly I can't use it(

Works. Make sure to toggle it for the sites you need it to work on.

Works great for coursera.org courses on Rhyme

doesn't work

Thanks a LOT

it is greyed out and couldn't use nor pin it

Perfect. Just tried it on localhost and the event for visibilitychange (active) is only fired once during load