Feed position jumps when moving between tabs

**Describe the bug**
Moving from the Posts tab to the Profile tab and back can cause the current position on the feed to change.

**To Reproduce**
Steps to reproduce the behavior:

1. Go to 'Posts'. Home or All should work.
2. Scroll down about 10 screen lengths or so
3. Click the Profile tab.
4. Pull down to refresh. Immediately switch back to the Posts tab before the refresh is done.
5. Once the refresh is complete, the current post display will jump to a new position on the feed.

- OS: Android
- Version: 2.37.2

Unknown if related, but showed up around the same time:
Pressing 'Posts' when you're already on the Posts tab no longer takes you to the top of the feed, but scrolls you up a random amount.