I've run the LZB training tutorial and found two things. 1. I can dim the center screens on the ICE 3, but brightness increase buttons didn't do anything. 2. at the end of the LZB zone, the AFB simply continued working and I got the speech about setting the handle to 0 km/h twice. Since the AFB was still working, the train of course wanted to stop with the handle at 0 km/h, so I had to disengage the AFB on the screen. This was on the PC through Steam with the standard edition.
Yes the voiceover is wrong. Once you leave LZB you need to either disable AFB from the screen entirely or just set it to the current speed limit as you manually control the train to a stop at the station.
Also in the LZB Tutorial, the popup in the top left (if you have warning system notifications turned on) says pressing right on the D pad on the controller will press the 'PZB Release' switch. This does not work for me on PC and I have to press the switch manually in the cab.
Another LZB tutorial issue on PC: if you leave your power level alone and let LZB bring the train to a stop around km marker 311.0, it won't resume once the track ahead is clear. This is because you need to bring your power back down to OFF and then reapply the power to clear the brake interlocks. However, the tutorial doesn't mention this so if you don't already know about that safety feature (or figure it out on your own) you'll just sit on the tracks indefinitely.