I am facing this issue in the recent versions of Android Firefox where if I switch apps and come back, or lock and unlock the phone instantly leads to the page refreshing and scrolling back to the point where I was reading.
This is quite frustrating as I have to keep the Firefox app always open or wait a frustrating amount of time for the page to completely load and scroll down. Some pages with progressive loading will take a huge amount of time for the page to completely re-download and if you scroll even slightly, the auto-scroll to where you last left is lost.
I can replicate it with just a single tab and I have excluded Firefox from all my battery saving and memory saving features.
Every Pycon has at least one talk on it and they are usually filled with a variety of tips and insights.
Prioritise by keynote speeches, recent ones, country level ones and then city Pycon.
https://pycon.org/