Not weird, just cool/wonderful. So, in my Life States Dynasty, Samuel Goth died about 4 weeks into the game. I got the notice that he had lost his tie to the mortal realm, which I took to mean that he was deleted due to having died of old age and already being a ghost. The rest of the Goth household moved out of MF shortly there after. So, here's the cool thing. I was playing the game today and decided to let one of my sims visit the Wolffs, who had moved into the Goth place. Lo and behold, there was Samuel's grave and, once midnight of the full moon hit, the guy came out in jelly bean form. I was flabbergasted. Naturally, I rushed a sim over there, befriended him, and grabbed his grave so that the next gen can produce lovely Goth babies.
Also, a weird thing about ghosts outside the household is that the game only half-thinks they're there, kinda like how it forgets that werewolves are supposed to change and actually age up. So, the spare kids from Gen 3 (who should be dead/dying) and Gen 2's spouse are still alive even though logic dictates they should be dead or dying off. Nope. Oh, and Erica Wolff has been hit with a really weird bug. In wolf form, she pretty much looks like an adult, down to body form and hair color, but she's actually an elder (and besides her, only Wilhelmina and Gator have aged up once; we're on week 26).