[Auraknight]

I initially only saw the Mawile, but looking at the screencap, you can see the Honeedge is suffering too!

[Auraknight]

((I can't figure out how to edit. Did some more battles, Mawile lost exp, and the leveled up when it hit 200% exp, and then further battles dropped it to 32% exp, losing exp with each fight. This is a picture of honeedge who is likewise over the exp, the counter on how much till next level showing negative numbers))

[Auraknight]

Right. Terribly sorry, I'm an idiot. Just saw the 'Leveled up: Yes' line. Never seen that before. Still, overflowed exp and negative numbers feels like mistakes. My bad!