I'm running version 87.0.0-rc.1 on my phone (Galaxy J7, android version 9). It has 2GB of memory and 16 GB of storage. I'm running AdGuard adblocker add-on, but same issues without that add-on. I find that Firefox crashes moderately often when showing videos. I ran this one in full-screen mode, and it crashed before it cycled through 10 times. https://www.google.com/url?q=https://twitter.com/LilySimpson1312/status/1376500968141979653&sa=D&source=hangouts&ust=1618277028064000&usg=AFQjCNFcfUYRMQ4H67yZQM5zHkrXAu_FXw Also, I find it highly frustrating that when I tap my Android home button while on a web page, and then go immediately back to Firefox, the web page I was viewing does a full refresh, which often requires me to log in again (private viewing). Example web page that refreshes is: https://getpocket.com/explore?src=ff_android&cdn=0 It seems to me that these both may be related to internal Firefox memory management issues. I have an old phone running Android 7 that has 2.5GB of memory, and it does not seem to have these issues, and it has far fewer other apps running on it.