I think swipe was fixed before 1.9.12, so maybe it’s not fixed. I’ll do some more testing.
1.9.12 encrypts the local database for some added security. There’s a chance that broken something. I’m also not sure if switching back and forth between F-Droid and manual install will cause issues. They are slightly different builds (different signing key).
A reinstall should fix the post loading, I hope, and I can look into the swipe gesture issue more.
Edit: I think I maybe have misunderstood your original comment. Are you swiping from the left side of the screen to the right, or from the right side of the screen to the left?