I went through Jaine’s Super with Midori’s Standing B and her super D R A G G E D me back into the cutscene. It originally happened in Arcade mode.
I don’t think this is unintentional
If you get hit by Jaina super you eat the whole super animation
If the last hit hits, it always triggers the cutscene. The last hit has a very large hitbox so that it won’t ever fail to juggle. So it’s working as intended.