Nope, you certainly wouldn't. Thats criminally negligent and any responsible shooter would tear a strip off anyone who did so.
You also never accept a weapon from another person until they have satisfied you that it is safe, you don't just take some stage hands word for it. When presenting an automatic you drop the mag, cock it to eject any round in the chamber, and lock it thus to allow the recipient to visually inspect it: cock-lock-look. Similar drill for stoppages. The recipient will then give a clear verbal command that it is clear, usually "clear" or "safe", or even just "thats all good". Shotguns, revolvers, etc, the process is similar, except you break the barrel to show the breech or release the cylinder to show the chambers.
That the weapon was apparently handed over with no opportunity given to inspect it, and no challenge from the recipient to be able to inspect it, suggests little or no training for either person. If I'd handed over a weapon like that 34 years ago when I joined id have got a fist in the side of my head for my trouble, and rightly so (today they probably get a finger wagging, and then a cuddle when they start crying).
The Michael Mann film Heat had Stephen Billy Mitchell, AKA Andy McNab, as consultant and technical advisor and no one even went near a weapon until he was totally happy with their level of competence, and word is he drilled them very hard. As a result not only was it a safe working environment, but the film was all the better for it as the actors displayed a good level of technical competence and familiarity with the weapons, and this gave a superb level of realism to the film - if youve never seen it its worth seeking out the bank heist scene on Youtube and youll see what I mean.
So my guess - and it is a guess with still faily limited, albeit of good provenance now, info in the public domain - is one of negligence on the part of the producer for non existent or inadequate weapons training, and lack of trained personnel present as safety officers.