With unsaved changes in Channel settings, Community settings, User settings, Members or Permissions, Back (the browser’s, or Kemble Desktop’s mouse button, swipe and menu) keeps the screen open and points at the unsaved changes bar instead of discarding your edits. Save or Reset, and Back leaves as before.
Previewing a community from Discover on a small phone with large text, the Join bar stays compact: Join is always in full view and the channel keeps some of its messages on screen. A reply to an app’s answer or to a message a moderator edited keeps the app’s or the moderator’s name, stays on one line on a phone at its usual text size, and folds onto a second line only where one line would cut the name.