I'm confused. My sentinel is wearing a robe right now with no hood. It dropped in Directive 7, I think. Can't remember. This was like a week ago or so. Level 50 robe.
I have no idea what the name of it is. I have to log in and look. But it's purple quality. I was surprised to see it didn't have a hood. So whatever robe the OP is talking about on the Cartel Market is not the only Jedi robe in the game with no hood.