I'm not sure, If this is a bug, whether it was just a one off bug, or repeatable, i'll try again later on & I'm not sure if there's a thread on it, so sorry if there is
Anyway, I'll tell you mywhole story, since I'm bored.
So, I was looking for a Machamp, and went to GTS and put in an offer, Machoke for Machoke and left it there, and couldn't find any other Machoke offers I could do, so I looked at Machamp, and saw Turtwig Any Level/Female Gender (Didn't realise this >.<) , and I had a Torterra, so *yay irl*.
So I went to the Daycare, Bred a Turtwig, Hatched it, went back, annnnnnd it was male, and I need female (FML). So, back to Daycare and bred more until a female came out. Back to GTS and traded it, Got my Machamp.
Went to summary and my Machoke hadn't traded so I canceled, while my pokeball was coming back I went downstairs to grab a drink, came back upstairs, and saw the "What?" evouloution screen, I thought "What the hell? o_O" and my Machoke evolved from being canceled from traded.
Maybe it was jsut me, but I always thought trades had to be completed for them to evolve, and not just canceled O_O.
So like, has anyone else had this "bug"? Hell, is it even a bug for that matter? If it can be repeated though, will save me alot of time filling up my pokedex I haven't had time to try it again yet, but will do soon.