Do small bubbles in the paint indicate a specific origin or different paint app?

I have C3PO with hong kong coo I.1a which has them around the shoulders and chest plate.

I think technically C3PO isn't paint.  Bubbles can be a result of poorly mixed paint, temperature, humidity, time between coats..

I vaguely remembered a debate, I think, about an AT AT Driver with paint bubbles and it having some significance. I could be way off.

Cheers Aussie.