Same issue. I am sure it a but related to the item degradation / time to live mechanic added. The attachments are showing is decayed and removed. Just a guess. I lost all attachments for an M4 including a spare ACOG, and all attachments for an AKM.

The issue is simple. When we drag a can of paint over the suit, we simply do not receive the option to paint. The can goes red, as if we are trying to perform an action that isn't allowed in game. No matter how many cans of paint we have in inventory, in what condition, the result is the same. The option to paint the full ghillie suit just does not appear.

Thanks for the update. I don't think re-spray is accurate. I can't spray the first coat.
It stays tan.