Double Springboard Moonsault 2 (Jacob Fatu running springboard finisher) doesn't do limb damage (but does health damage)
As the title states, Double Springboard Moonsault 2, which is Jacob Fatu's running springboard finisher on the corner (not to be confused with the non-running version he also has as finisher) doesn't do any limb damage: It can't get a body part (it supposedly targets the torso) to change color. It does seem like it's doing damage (the torso blinks once) but it actually doesn't, it never changes color.
However it does damage the health bar and can stun opponents. What this means is Double Springboard Moonsault 2 can help you pinning opponents, but doesn't help you submitting them, making them quit on I Quit matches or, I believe, closing the casket/ambulance/dumpster on them where damaged limbs play a part too.
I tested first on the training section of create a moveset and I couldn't get it to change the opponent's torso despite hitting it many times. I then tested on an actual match (because sometimes moves are bugged in Create a Moveset but not in actual matches) against Eric Bischoff (lowest rated opponent at 58 OVR) with 3 finishers, hit all 3 on Eric, could pin him but the torso didn't change color. However when retrying the match and using Double Springboard Moonsault 1 (non-running version) the torso did change color as expected, meaning it was getting damaged.
Just a heads up, if anyone's looking to make another compilation of issues to report like that guy a couple weeks ago here you have one