I’m getting this same issue with my Logitech G500. Haven’t found any fix that works so far. Guess I’ll just use the AutoHotkey workaround for now. It’s crazy how long this bug has been in the game. I didn’t even have the issue with my mouse until around when Living Story Season 2 launched.
Edit: I tried uninstalling Setpoint, re-installing Setpoint, compatibility modes, and the DPI fix from a few posts up; None of that worked.