I was playing a game in Expanded against someone playing a Kommo-o GX deck. Honestly, it was an amazing deck, and I'm thoroughly impressed. I was playing Night March and I thought it was going to be an easy game (It was Kommo-o, for Arceus' sake) but nope. I was royally defeated.
That's not why I'm making this post though.
For some reason, whenever my opponent evolved into their Rainbow Rare Kommo-o GX, it showed up as Full Art Kingdra EX. It stayed like that for as long as I didn't right click it to see it fully on my screen. Once I did that, it showed up like Kommo-o like it should and stayed that way.
He used an Acerola throughout the game and re-evolved back into the same RR Kommo-o and it did the Kingdra thing again.
I didn't take the game log from this one. There didn't appear to be anything special in the game log. It said it evolved into Kommo-o GX every time, and didn't mention anything about FA Kingdra EX. I think this was just a graphics flaw.
Still wanted to update it though.