I know that it is a fork of a Reddit app, I'm saying you can make your own fork and implement features you think are better that you know aren't going to be part of the main project. That's the beauty of FOSS. You are also conflating two different issues here. The first example is about using multiple devices. What that person wants is that they hide the submissions not just locally but through Reddit on the account level, so that they would be hidden even on other devices (like the desktop or for some reason a second mobile device). The second issue is something I just tested in between my comment and the edit and I did not see the postings that were hidden even after restart & refreshing. It's also something they didn't say is impossible or would be unintended, but rather said that it is indeed possible.