New to nanos, I was wondering if anyone can help me with my green star polyp not extending fully

. Other "animals" include 1 blue leg hermit, 1 candy cane coral, mushrooms and a torch coral.
3.5 gal nano. 5 lb LR for fitration and 18 W CF light. Water conditions are good. Water changes weekly. About a 5-month old setup with animals in the last 2 months.
Animals are fed about weekly with ComboVital (with shrimp pellets every so often for the hermit crab).
I was just wondering if the unextended green star is a sign of something bad to come.
Thanks for the input.
This is my 1st post on CanReef.
