Not sure if this has happened to anyone else yet, but there is a bug I noticed that happened with at least the blue "Plushie":
if you hold it in your hands and use Alt+R to place it in a plastic crate, remove it, and then place it on the floor, it became
'locked' into place. I couldn't collect it, hold it, or even grab it anymore; and now it's just stuck in one spot.
170 days ago(+2)
When you put an item in the blue crates they become "glued" to the crates. If something knocks them out quickly or you pick them up out of the crates it can cause glitches like this. The only way i've found to fix it is by using the crate to scoop it up like the other comment said. One way to prevent this in the future is to pour the crates contents out instead of picking things up out of them.