@pachli I think there is a bug in the back button functionality in Pachli when using the reverse timeline. When I do something outside the timeline and then return, using the back button (or the Pachli app icon in the home screen of my phone) I more often than not find my way off in the timeline, usually dozens of posts earlier than the place where i just was.
However, if I use the "recents" button on the home screen and pick #pachli there, I usually end up in the right spot on the timeline.