Water or something that is looking like water in the bulbs after using them for half hour.
You have a production problem.
Humidity in production area is to high
you need a high pressure area or a room with air dryer.
Or the BR30 needs a breathable membrane like car headlights.
Perhaps vacuum is possible.
Scratches seems to be made from a conveyer belt. Scratches are only in one direction, like something pulled it over a not smooth or not cleaned surface.
But the main problem is the water.