This is a weird but funny bug. I encountered it when I saw a room full of scrap piles at a Lower Cave. Strangely enough, there's a door on it! So after searching through all of the scrap piles, I decided to drop an equipped item to manage my items around. In this case, I dropped an axe. And guess what? It got destroyed all of the sudden! The animation is exactly the same as if the axe is a processor, including the fading red color and the "detach processor" sound effect. And yet, the top-center message is: "Insufficient inventory capacity, dropped". Fortunately, I was able to reproduce the effect over and over again.
Here's what you need to do:
1) Go into a room (with a door).
Fill the room with items so that there's no more empty space left. Then stand inside the room at a tile
away from the door. I did it in a small cave room mentioned above.
2) Make sure your inventory is
full.
3) Drop any equipped non-processor item (either with a mouse or keyboard).
If you attempt to do this next to the door (thus opening it), the bug will NOT appear. I'm not sure if it's possible to reproduce the bug at a main complex map, so this is something to be looked at too.
For demonstration, here's the GIF image.
I've also attached the .sav file in case you need it.
P.S. I want my axe back....
Edit: The part destruction also occurs if you drop any item from you inventory, after following step #1 and 2 above.