On my Titan, who apparently is the only one of my characters with this problem, bouncing on landings and flipping. Going perfectly along, make a jump, then BOUNCE on the landing killing all forward momentum. Sometimes it is a bounce straight upwards followed by a flip.
And it only ever happens on Mars.
Happened several times in a row where I was leading by a little and lost it all. I was stuck thinking "Alright, just recover and make third." followed by a flip or more bouncing. I'm starting my Titan is cursed or made of the same stuff as super bouncy balls.