[GAMEPLAY] Brand Mega Ult Bug Of Fiery Red Destruction

I just got finished playing a ranked match as Brand, this happened twice to my knowledge. An Amumu ganked against me and they had a Zed mid lane aswell. In Desperation i throw out an ult to see if i could take one of them with me, and it hit Amumu first, then travelled to Zed when he blinked back to his ultimate, then he dashed back over to me to finish me off, and my ult bounced about 25 times between him, Amumu, and the minion wave, resulting in them both being taken down from full health giving me a double kill.

This happened the second time (Desperation Ult again) as i was dying i threw an ult into their enemy Thresh, Lucian, and Shen resulting in them all being taken down from full health as i'm sitting in my computer chair keeling over with laughter as this bug turned their tower dive and inhib push into a triple kill for me.

From thinking over the gameplay it seems this might be cause from dying as my ult is still live, but theres no way to be sure AND AS A WARNING TO ALL SUMMONERS! BAN BRAND UNTIL HE IS DISABLED!!!!!!!!!!

I will not be exploiting this. And this was a one game incident where i was stuck with a bugged champion that may or may not have won us the game.