I'm witnessing a slight incompatibility between this mod and the Cannonball Booster by NDP.
A) Something in MUA Jump Attacks is causing Cannonball to t-pose when the mission starts, but performing any movement/attack action will fix this.
B) After running, Cannonball will walk in place until another action is performed.
Luckily, none of this affects playing him in battle. I've tested this in a new game with only OCP and 50R loaded, and on multiple costumes (with/without legs).