game breaking vision bug
So I was checking enemy sejuanis red to steal after I finished my buffs; and as I'm walking through the brush to red I was given full vision of Sejuani as she cast her W on the golem camp and happened to be less than 150 hp so I jumped over the wall and killed her.
I felt bad but this was ranked and I'm going to play to win, however I can't figure out why in the hell I was given full vision of her?
I know normally you can hear the sfx of enemy spells through walls if your nearby, but Sej was killing the golem camp kited back closer to top lane, I'm standing in brush on the side of her red buff. As she casts her W I'm given FULL VISION and most likely would not have even seen/heard the normal sfx as I had music playing, I ONLY NOTICED HER BECAUSE I WAS GIVEN FULL VISION and it single handedly won me the jg in this matchup.
I'm not complaining that I had a free victory, but what worries me is that other abilities can trigger full vision on you by a surrounding enemy who may not have otherwise noticed you.
Im having trouble making any screen shots to post here but the replay on replay.gg is: http://www.replay.gg/search/na/how%202%20dougie#2050662449
it happens right about 3:26