Bug: Fulle timeline fetch can loses your position if app is used while fetch happens

[Leonick]

Environment:

• OS:
  iOS 26.1
• IceCubesApp version:
  2.1.2

Description

1. Active full timeline fetch
2. Go to bed
3. Open the app and tap any post
4. Give timeline fetch some time to complete, look through the replies maybe
5. Back of from the post, the timeline is now updated but you're at the top of it instead of the last position.

I noticed the issues specifically when viewing post details and have confirmed it is repeatable. It is possible that other things that hide the timeline like switching tabs or opening settings would have the same result.