solvent poping

The circled area's look to me to be under the paint. One perhaps is a dirt nib in the clear that was wet sanded a bit and polished, but the rest look to be issues under the paint or primer. I have seen little spots like this in the shop before. A lot of restorations sit in bare metal as they are being worked on for long periods of time. What it looks like to me is rust. The bubbles on the top edge of the panel look that way the most. But it is very hard to say with a picture on the internet.