There is something very wrong with the ramp on that barrel. You should never see that much brass exposed when the case is fully chambered, especially on a 10mm. That is much more than a "smiley". The ramp and throating should not go all the way around to the top of the barrel either. I would not fire that until you find out what's happening.
Someone has hacked on that barrel. I wonder what else they did while they had it on the bench. Please don't shoot it until a smith can look at it.
Listen, something has got to contain the back end of that case. It cannot fire like the picture on the right and NOT have a smiley on it.
When the barrel is in the gun, does the hood of it come back and hit the slide? If there is any gap there at all, it is put together wrong.
1911 gurus, what do you think? If the slide stop hadn't recaptured the barrel link when I reassembled might that have cause it to unlock early? The only other thing I can think of is the springs somehow didn't get seated but every scenario I can think of there makes the spring action stiffer not softer.