[ARCHIVED] Objects floating in mid-air

Is ANYONE going to help solve this issue? I see this is a few years old and I'm having trouble myself with this. My Sims are putting their uneaten plates in mid-air. This only happens with one household as far as I can tell and I tried thinking of what I could have done to have caused this. I deleted this couple's baby (Before you judge: I had turned off neighborhood stories and they still had a baby, lol). I can't think of another reason this would happen. The only two on the lot is a couple. And before you ask, I am getting a Last Exception and yeah, I'm putting it into the Last Exception Assistant (link: https://lastexception.com/ - it's a GREAT help for those of you who don't have it) and the only thing it's saying is that it's an unknown error and chances are, I don't have an issue and don't need to stop playing. I don't know if it's related, but it's the only bug I can see happening, other than an adult mod that's acting kind of funky and I can figure that out elsewhere, so I'm unclear as to which issue it is. Here's a picture of it, and as you can see, it doesn't have an invisible surface underneath it, as it doesn't hinder their movement in the kitchen, nor does it hinder my ability to control the stove menu underneath the floating plate. Can anyone please help me with this issue - and apparently, a ton of other Simmers?

Also, I know this isn't a technical issue, but while I'm here, I keep hearing this ominous music in Sims 4 like something bad is happening, or something bad just happened. I can't tell what is going on. I even pan out and take a look and can't find anything. i know this covers probably a few things, but... can someone tell me what that's a signal for?