Could you please write more about this bug, I would try to fix it?
Viewing post in The Magpie Job jam comments
Although it states that rainbow diamonds can be used as any diamond color, this only works if the match is right to left. Going left to right, it's not working. In this example I selected yellow, then green, then the rainbow. I would expect to be able to fulfil the 4th contract, but it doesn't allow this.