This script adjusts UI of m.facebook.com to get rid of useless panels:
- MBackNavBar - back arrow header above the current message - is removed
- MStoriesTray - box with various stories - is removed
- conversation guides are removed
- clickable area around "Like", "Reply" and "More" is made smaller to solve click problem in mobile Mozilla Fenix
- switcher "most recent / all comments / top comments" is moved to another position in order to avoid interference with reactions
- header icons with counts are visible now on white background


Please try another script for m.facebook.com, which enables text copying in mobile browsers: https://greasyfork.org/en/scripts/419355