As you may know, we had some issues with certain quests during this Team Race.
It was fixed quite fast, however, since it wasn't possible to complete them some players had to skip them with gems.
We have checked who spent the gems on those quests and returned them back. All of this was done automatically without any pop-up. So if you notice you have slightly more gems than before, its because we have refunded what you spent on the bugged quest.