Seems like the "main" most common I had issue with the last couple was the extractor not being correctly tuned.
Mags are also a big issue. Some mags are the issue, some guns are the issue. I've had high dollar Wilsons work fine in one gun and not all that great in another. The best luck I've had with mags, has been stock Colt mags and GI contract mags. The seem to work in any gun I put them in.
Springfields frames are very inconsistant. They make up their own specs as they go, and they can vary in the same serial number run on the same model. I've had issues with their slide to frame fit too.
My Kimber UC's feed ramp was boogered up by the followers of the Kimber mags to the point a groove was worn into it. The grip safety was also non functional on it. I've had that issue with a couple other 1911's too over the years. Dont trust them till you prove they work, and even then, watch them.
Staked on aftermarket sights are a joke. They dont usually stay on all that long. Dovetailed front sights are one of the better design changes for the 1911.
Thumb safeties either to tight or to loose.
Plunger tubes that fly off.
Grip screws and bushings that come off with the grips.
FLGR's causing troubles.
FLGR/double spring set ups on the short guns.