While in remote view, right-clicking a bunch of scrap in a spidertron's inventory, I have observed that the "X" mark remained visible on some of the slots. I've had about a dozen stacks, some of them I've right-clicked from the far end, while others were right-clicked from the beginning. It seems that as random bots were racing to remove different stacks, the "X" mark remained visible on two now-empty slots (screenshot below).
The effect was later relatively easy/consistent to reproduce by frantically clicking on random inventory items (I guess StarCraft experience helps).
I don't think it has significant gameplay consequence, as after exiting inventory view, the "X" marks have disappeared.
Other observations:
- It is possible to insert more items into the inventory; the items would be able take the slot occupied by the "X" mark (without actually getting affected/removed);
- While the "X" marks remained on an empty slot, right/left-clicking them had no effect; as more stuff was added to the inventory, the now non-empty "X"ed slots were impossible to interact with anymore; so the effect doesn't seem to be purely visual.
(Pure speculation: I'm assuming that Factorio's GUI is immediate-mode; this bug seems to hint that some logistic request state is retained in the view separately from the model; closing the view "cleans up" the buggy state.)
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