There seems to be an issue in the forum software which effects users on iOS safari (the browser, so not in the application).
There is an old post here on the forum which might be related (iOS: 'back' goes to wrong position in topics list , locked) but seeing it’s from back in 2019, it might be another issue.
It’s reproducible here on meta as well as on the try forum.
Way to reproduce:
- Scroll down a bit and find a topic with a lot of comments
- Visit topic, scroll down a bit (the more posts the more obvious it seems)
- Press the back button (or swipe back)
This will move you far down in the topic list, and not to the point where you entered the topic, forcing the user to scroll up (sometimes quite a bit) to return to where they where.