PS4 Free Roam - Flying Scotsman On Rosenheim - Salzburg ...brakes By Itself!

Yesterday, I was driving a new Free Roam, using the Flying Scotsman on the new Rosenheim Salzburg route.
After driving some km,... I noticed the train starting to slow down, even I have no press the brakes!
Really strange! Then it released the brakes again, but very slowly!.
Then, it repeats that strange brakes applied and released - by a phantom?! - several times.

I have made several Free Roams on different routes using the Flying Scotsman, without on different routes, without any problem.
There was a while I did not drive it, so... may be this was affected by some of the sim updates lately?

Please check the picture below, where you can see the HUD at the right, where the brakes gauges are completely released = 0 value, but at the left the brake is showing as being applied.

Please notice I was not touching any locomotive control during those situations.

Have you experienced this?

 

Look at the lower two brake gauges 'VP' and 'VC' for the vacuum brakes. Those should both be at 0 (unless hauling vacuum-braked stock). Did you touch the small/large ejectors at any point?