Nexus Blitz: Instant Event Win Bug

Was in a game with Poppy(me)/Caitlin/Blitzcrank/Malzahar/Quinn against Bard/Gragas/Zoe/Graves/Jinx and the weirdest bug happened where the first event my team just instantly won. When the event counter hit 0, the game never said what event it was(everybody laughed their butts off though). Game date was today(9/4/2018) with game length of 8:29.