Can't preview styles?
I had this happen for a spell the other day, but it resolved itself after a client restart. (Mac client) I was previewing weapons and armor both from a karma vendor, the weapon showed up if weapon only was ticked, but otherwise, the preview window was blank.
Are you referring to the vanity items from the gem shop? I was getting huge amounts of loading lag there the same day and couldn’t see anything there either. Seems to be working okay today.