As the title suggests, I came across a small glitch in the game and it's preventing me from progressing in the story. It's when Ty finds out the redback gang has a shadow stone and races them for it and the crystal egg. The sixth crystal egg that must be collect, while it does show on the mini map, it doesn't actually appear on the track itself. Has anyone else experienced this and, if so, what can be done to mitigate it?