In the zip I sent you is a rx to scoreboard system that worked perfect in 1.9.
(If you didn't find it it's at the 0 4 0 coordinates)

After upgrading the system to 1.11 it continued to somewhat work. (I say it somewhat worked because it works but not perfectly, that meaning that it was almost always worng with +/- 1, 7, 31, etc.).
I made some research on the changes, and nothing led me to belive that it's because I forgot to update a feature in the system.
I asked around on the minecraft forum, other forums and renowned for command blocks, youtube channels and noone seems to have any idea the reason why is this not working, so the only logical explication is that it's a bug.
If it's not a bug please let me know where the mistake is, and if it is a bug please inform me if you solved it!

einstein5