Factorio Forums

*edit* - not actually a bug, see my 2nd post. Sorry.

Situation: I was cleaning up unused stuff in a space platform (specifically, "Gleba Express" in my save). I sent a stack of legendary cargo bays (among other things) down to Navuis. The landing pad on Navius has trash unrequested, so bots took the cargo bays and put them somewhere. A few minutes later, I went to look for where the bots put them, and discovered they put them in a storage chest filtered for coal.
This is not good because I use filtered storage chests all over my base to consume junk (like here, extra coal gets merged into the coal bus (I know the priorities on the splitters are wrong)). There are plenty of unfiltered available storage chests around my base.

I tried to reproduce this, but wasn't able to. I didn't have an autosave from before I dropped the cargo bays down.

Actually nevermind, I think I found the issue. The chest to the left was unfiltered, so the bots put the cargo bays there, then the inserter moved it to the middle chest. They didn't get taken out of the middle chest because the removing stack inserter had a half-full stack of coal. Feel free to resolve.