I have never had that happen and I played a Titan main for 3 years. My Experience is unless your target doesn’t know you’re coming, you get shot up sprinting and then die in your shoulder charge the a melee attack. OR you start shoulder charge and collapse from Shotgun to face. I’ve never been able to bounce around a corner nor have I ever been killed that way....... maybe you are experiencing lag which gives the appearance of bouncing off a wall and going around a corner for a shoulder charge kill