Driving the BR185 on a freight run on Koln Aachen. Hold square R2 allows me to increase AFB, hold square L2 doesn’t let me decrease AFB as it says in the controls layout. I can only use the usual AFB speed handle
This happened to me when doing a run in the ICE3m too. After some fiddling about in shift mode, I found that square R1 decreased the AFB instead of L2.
Xbox also has similar problem when real buttons differ from what is shown in help screen. Instead of Left and Right Triggers you have to use Right Trigger and Right Bumper.