[1.18.2] SW-1.1.3 fabric: The Darkin Scythe Umbral Trespass works just fine on right click, but the Shadow Assassin that has the same hability doesn't.

Also the forge version crashes on start with exit code 1

Did you make sure to use it while in combat (after damaging an entity) that was also alive? Could you provide a video of it not working?

I know this response was very late, but the issue will be closed after a few days if there is no reaction here.

Closing due to inactivity. Make a new post if the issue persists.