If I enter a new race before I receive the event of the previous race, the racing icon will stay red even though I'm entered into the next race and the time is counting down.
As you can see in the screen-shot the racing icon is red and when I hover over it, the details of the previous race are shown. However, on the main page you can see that I am in fact listed for the next race and the time is counting down normally.
https://dl.dropboxusercontent.com/u/18571413/Racing%20Icon%20Bug.png
This bug doesn't actually stop me racing, but it means that I have to come to the raceway page to know how long I have left until the race.
Hope this helps.