After Engineer reports that car has a problem radio button disappears so I can't use radio anymore and I get no radio calls from engineer either, gameplay (race) continues like nothing is going on and once I finish the race and I have no control over the car radio comes back and engineer says "race over take care of the car on the way in". ItĀ happened to me in multiple races already in career mode with different car failures, it's definitely a glitch. In the video below you can see it happening.