Steam Unable To Insert Master Key In Class 220 Voyager

After arriving at Plymouth and changing ends in the Limited Power scenario, I am unable to insert the Master Key. I have restarted the game many times, but the problem still persists. I have only experienced this issue in the Limited Power scenario.

 

Did you make sure the master key was removed from the other cab and that the other cab was fully shut down first?

 

Set power handle to max break as instructed then set it to off. This will allow you to insert the key.

I had to do this at the other end too.

 

Hmmm, instructions didn't tell to release the brakes, but it works, thanks!

 

I have this issue on PS5. I've tried previous suggestions such as disengaging the brake fully, and messing with the lights, and even moving the train forward, stopping, and following shutdown steps again but it won't activate the cab in the rear.