So I've never seen anything like this before. My parameters are all intend norm. Sorry too lazy to type them all out. This is the most skeleton I've seen in a while the polyps just cover the whole thing. Growth wise it's encrusting well not much verticals growth.
I have quite a few sps that will encrust a large area and then start shooting up pieces, but each is different and depends on flow, lighting & parameters! I have some also that barely encrust at all and are large colonies and I think each has a mind of its own. I would just keep an eye on it sometime's corals will have more polyp's out then other times and it looks like nothing is really wrong with it from the picture!