This poses an interesting situation for inspectors.
Do we violate the installation for not using the proper listed equipment for the enclosure, or do we say at least they separated the equipment grounds from the neutral so I am satisfied?
This is a very typical installation I see almost everyday.
This is clearly a violation of 110.3(B), but...
I will say this; I have seen large faults where the connection of the fittings and the screws were scortched - obviously not a good sign for the fault current path.