When you go to enter the scenario as a player, the state of the per-player mod settings as they were when the map was created carry over to the new player. I tried disabling one of them from the main menu and entered the scenario, but that setting was still active in the map.
I believe that the game isn't disposing of the editor player's per-player mod settings when that player is removed, so the new player 1 inherits those settings. For my mod, this means that you're stuck using the default settings if you enter that scenario.
I would greatly appreciate it if this could be fixed!

To reproduce:
- Download and enable Editor Extensions
- Change one of the per-player settings from the main menu
- Start a new game in EE's testing scenario
- The setting will still have its default value instead of the value you set it to