@Abear1440
The good news is that in cases like this you can still get your stuff back. The bad news is that it is indeed a bug.
The jacket you found was lying on the table. when you put it on, your current jacket was placed on the table instead of the previous one. so even though you don't see the items in the menu nearby, you can still take your jacket from the table, you just need to hover over it and you will see that the previous jacket can be picked up with all the things that were in it.

@Geez
in fact, the bug is that if a thrown item "touches" the textures of other items, it stops being visible in the "nearby" menu. the problem becomes more serious if the items "touche" the textures too much, in which case you will not be able to pick up the thrown item, even if you hover over it.
Also, a very common case is when a hunting jacket is lying on a bed in the camp and you change it to the current one you have, after which your jacket does not appear on the bed, but appears UNDER THE BED, and then you can no longer pick up your items. This is exactly the bug.