Drat! My story file is starting to glitch on me!
I yanked a drum kit out of one of my sims' inventory and it immediately disappeared. I was annoyed and bought another one, but thought nothing more of it until this guy autonomously starts playing on the invisible set. Air drums, anyone?
That bouquet of flowers is being held by a very invisible Leighton Sekemoto.
I found it odd that a bowl of ratatouille was walking across the ground under its own power, then hopped up onto a table. Further investigation revealed another invisible sim, Vita Alto. ResetSim is my friend...
And finally not a glitch, but rather amusing:
Cowards are afraid of ghosts, even if they are one themselves. Kermit Landgraab totally lost it when he saw Nick Alto's ghost. I've recently noticed that the graveyard ghosts are doing more, staying and interacting with other ghosts and haunting things rather than disappearing off into town as soon as they appear. Was this the 1.39 patch or what? I like it!