That contained a useful explanation @jan1i3 thank you.

I discovered a case where a fully compressed half belt of items can be entirely blocked, even when the output is entirely clear, due to a fully compressed belt sideloading onto it part way through. This was achieved without any loops and using only one belt type. I believe similar bugs to this have ...

I should have clarified, it doesn't have this behaviour for other buildings or ghosts, which doesn't seem to be consistent for me. Another video is attached. When feeding coal, I have the drop key held the entire time (not tapping or mashing it), and when the cursor goes over the rock, it starts dro...

When using single drop (default Z), to drop 1 coal at a time on burners, a single one gets dropped on the floor each time the cursor goes over rock entities, as shown in the video.

Resetting an oil refinery's basic oil processing recipe will push out up to 100 crude into the pipe it's connected to (or more if the pipe has more capacity but default vanilla pipes have a capacity of 100). However, when pasting the recipe for advanced oil processing onto the refinery using shift+l...

This behaviour was used in speedruns such as this steelaxe% run: https://www.speedrun.com/factorio/run/y4gdln2y In the first 3 minutes it is used to feed burner drills and furnaces before they are ready to be placed, saving some time. This functionality is now broken. I hope some compromise can be m...

This bug is very easy to replicate. Just copy what I do in the video and it will give you an underground through empty space for no reason. Happened to me while speedrunning and I have attached the save of the finished run here. Let me know if any more info about the bug is needed. https://streamabl...