During the training on the br 143 locomotive, the red light at the first station does not change while the lector tells us to go alone with emergency braking. I am standing and the train from the opposite direction is standing and nothing changes. And the training cannot be completed
Yes, it's a known issue. No, there's nothing being done about it. You could open a ticket, as described in the sticky, for all the good that will do.
There is a workaround for this one if you're after the achievement/trophy that involves TSW2 if you have it. It involves doing that training mission in TSW2 on another driver profile. Transfering that profile to TSW3 and completing the rest of the training missions on that profile.