Champion Purchasing Bug

I had a turn where if I clicked to buy a champion, it bought the one to the left of it (and I didn't think to test it, but likely the left-most one would have bought the right-most one) and then when I bought it, the picture of the unit I had just purchased shifted one to the right to cover the unit that was there prior. There was no duplication of units going on or anything, I believe the glitch was purely visual, but it made it difficult to do what I was trying to do, nonetheless.