[busterbrown]

There was a post on an RV facebook group a month that I was following. The owner had a front fiberglass panel that looked almost the exact same. Posters said it was the release of glue on the backside of the panel due to sun and heat exposure. I had my suspicions and made mention that it looked more like water penetration around the marker light at the top.

The owner took it to a local dealer and reported back that it was indeed due to lack of sealant around the light.

Take a look paying close attention to those lights and the front roof seam. Good chance that it's not benign / cosmetic flaw.