No it's been fine and open for the 2-3 months it's been in there.
The head that is closed is usually the biggest head and kinda covers up the others when it's open...I'll try to move it to see if some more light will get it back healthy
I moved the affected head into a position with more direct light and already the little green heads are slowly starting to pop out...a portion of the head is still very much curled in so you can see the skeleton popping through but the rest seems to be recovering ...here's a kind of bad pic but best I could do in it's new spot