Features just for insta? I thought this was a web browser not an instagram browser. I guess same goes for the facebook container... what's up with building browser features for facebook? Why no reddit container, or google container, or amazon container?
[1] https://blog.mozilla.org/blog/2019/08/21/mozilla-takes-actio...
[2] https://discourse.mozilla.org/t/the-removal-of-the-dissenter... [3] https://hub.packtpub.com/mozilla-and-google-chrome-refuse-to...
Or does FireFox's picture in picture code have special casing for some sites?
They fixed a site-specific bug. It takes some creativity (and a strategically short quote) to get outraged over a browser update improving how the browser renders websites.