miraluka sudden mask change

I have a Jedi Sentinel level 18 who is of the Miraluka species and wears a purple cloth over his eyes

I logged into the character today to play it for the first time since about a year ago when I was last a subscriber, now I'm on preferred status, and I was alerted to needing to choose a discipline for my Jedi Sentinel to which I picked the Concentration discipline. Then after I played for a bit and logged out, I noticed my character's purple cloth over his eyes had become one of those cyborg-ish eye pieces.

What is going on? 

I did not change anything on the appearance at all, what is causing this issue?

Is it a bug or is it because I chose the Concentration discipline for my Sentinel? Does disciplines regulate looks somehow?

I really do not understand why the mask has changed.

How can this be fixed?