I'm not sure if it's the same as you're describing, but my Maine Coon kitten jumps kinda funny. When she jumps it reminds me of videos of foxes pouncing on prey. It's a sort of vertical leap/pounce thing. Also she doesn't do the stalk-pounce type sequence like most cats do when they plan to pounce on something. She doesn't crouch and try to stalk closer or walk closer to the "prey" (toy, my hand, whatever) but instead she just leaps right from where she's standing!
Here is a video I took of her jumping into a stroller, however this is a little different than her normal jump because she did this one from a run:
Here is a video I took of her jumping into a stroller, however this is a little different than her normal jump because she did this one from a run: