Chuts open to conveyors that are leading at them, even when they are sloped.
Idk how reasonable it is to make a case for opening chutes for sloped conveyors that come from one block below, but it'd be a related issue, I guess.

(in case you are wondering why there's a chute there, and if I'm just building bs to break the game now: The conveyor above it was replaced by a dropping conveyor and the thing leads into a cactus, for disposal of excess hemp fiber)

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