I've never run into any glitches, Apart from one where my sim got duplicated and turned into the tattoo artist.
Relationships getting broken. (If a sim starts a relation ship with one sim, but breaks it off, that sim can almost never marry.)
Sims disappearing on vacations (I sent my sims on a vacation to france, When I got there, I had no sim. I went back to the town, the family was unplayable.)
and permanent loss of happiness. (I randomly get bad moodlets, Like being hunted by a vampire, and they will never go away.)
Those are the most common for me.
But I've gotten alot more than this.
not to mention EA is the worst game developing company ever.
they tend to do everything wrong and piss everyone off.
The player models are ew
This isn't a FPS, Get over it.