It actually looks a bit bleached. It is either melting or dividing. I never saw the later happen in avleapora before. What does the piece on the left look like? Is it just fleshy, or is there some skeleton with it?
It looks like it is bleaching so it very well may be stressed. If melting it is not good. If dividing it is a survival thing. Dividing is a normal process for soft corals and a few LPS when growing never saw it in this species. What the separated part looks like will better tell what to do. Either way it is not a happy coral.