Has anyone else had this flash firing when closed issue and had it resolved? My camera is doing this too and it seems to be happening in Program mode. Now the flash lens is a rather yellowish color and I have the smelling black powder substance in the flash compartment. It seems this is a firmware issue/malfunction, but now I don't know if my camera needs to be serviced which can be a total headache. Any further info on this would be appreciated. Sounds like this is a well defined issue with the GH4. Thanks in advance.