Maybe a messed up code or something.

Allhallowsevil

This probably doesn't belong here but asajj ventress just tried to heal Darth Sidious.

DarthKoon

**** are you going on about.

APX_919

Ventress' heal also removes buffs from enemies so in all likelihood this is what happened: enemies have buffs, Sidious is under 100% health, Ventress "heals" but isn't trying ti heal Sidious but rather remove enemy buffs.