So after doing some extensive testing, I'm getting some consistent crashing on certain parts of the character. I did some diagnostics and found out that there's actually one more way it will crash, not just the two I mentioned and why does it do it. Hint, it has to do with hitboxes. I usually don't use debug mode for testing characters as there's usually no need, but it has gone to point where I have to since it's literally game-breaking.
-Jump Punch Medium
Spoiler, click to toggle visibiltyThis happens as the last 8 frames have no hitboxes. If you turn on debug mode and see there are hitboxes in-game, they aren't aligned to fit Zero's sprites as they use random placements for those frames.
-Z-Saber Slash 3
Spoiler, click to toggle visibiltyThis happens on the beginning of the animation. Same with Jump Punch Medium, there is either just one hitbox near where he swings his Z-Saber or just uses random ones for the rest.
-Ultimate Saber Dash
Spoiler, click to toggle visibiltyThis happens on the 4th and last hit of the animations. Two of the frames in the animation are not using consistent hitboxes with the rest and any that use blue will disappear.
If you managed to get lucky and play through a round without the game closing and managing to use all 3 moves, then the character won't crash for the rest of the match as it will stick with those hitboxes. If you play Arcade mode, this is not good as it won't use those exact frames on the next rounds as it will generate new ones, making crashing possible. Just because it doesn't crash for you doesn't mean it will again on the next match. Please, don't overlook this.