Comment by stephen_g
15 hours ago
I feel like that's definitely a choice for Facebook at least - there's no technical reason the app couldn't remember at least the post you were looking at. I think they literally don't care if you were halfway through reading something when you flicked out of the app and go back in - refreshing the page and showing you all new stuff is probably measurably "better for 'engagement'" by whatever silly metrics they use.
It’s been a while since I worked for a bigger company (not meta) but the problem there was you would have a team who was responsible for feature A and a team responsible for feature B, and if there was any weird interop between the two it just never got resolved because there wasn’t an owner. There was no internal incentive to fix the problem. It wasn’t deliberate but it was structural