On the MP36 Baby Bullet loco intro scenario. Initially the Independent brake is enabled for use. I use the independent brake to fine control stops. Upon departure from the first stop, the scenario disabled the independent brake, so it's not possible to release it. To be fair the instructions don't include using the Ind Brake. Quite a minor issue, but requires restart of scenario in case someone uses the Ind brake. Just wanted to report it and add to list.
