Bounce button scoly

[Fishrfriend]

Have anyone seen a bounce button scoly? I have had this button scoly for over a year now. I just started noticing the bubble/bounce on it. Looked all over the internet and I could not find any other scoly like this. Anyone else have a bounce scoly? pics shows the scoly when my light is off, 2nd shows when light is on....

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[joseserrano]

Have seen varies LPS do this over time, typically in LED lite tanks. A friend of mine believes they are like ulcers from the concentrated rays of the LEDs.