Starting light, no starting lights
I just encountered something new. I was in a rematch race with an insignificant wager on the line (thankfully) and we were in burn-out when the starting lights appeared, but they never actually lit up for me. My opponent shot off the line and I gave chase with the dark lights (oxymoronic) on my screen throughout the race. Needless to say I lost and in the follow-up rematch the lights worked fine, but it's something to look out for.