See Bug Here: https://www.twitch.tv/ghostthellama/clip/ArborealHomelyDiamondDoubleRainbow-7pEsp_PdRRGLumtG
(I am not the streamer, but have died many times in this manner)
Looking frame-by-frame, it appears that, relative to the mouse-cursor-origin, player-origin, and 2 zombie origins, the targeting is misprioritizing what to attack, resulting in death. The closer zombie's origin appears closer to the mouse-player line, but isn't targeted.