William Rust

As a temporary fix, introduce a chest into the hopper system (i.e. somewhere are the top just before the hoppers start pushing different directions - I found this fixes the issue (temporarily - the big is still there). I believe it is to do with the hoppers placing items in either slot 1 or slot 2 of the hoppers' inventory - this for some reason also dictates where the items end up further along the chain...

Items put into slot 1 a hopper will be pulled by hoppers underneath (as a priority over being pushed by the above hopper to the side). Items placed into slot 2 of a hopper will be pushed sideways (as a priority over being pulled by any hopper underneath)

I'm confident that I have isolated a bug... (see screenshot above with words scribbled on it)... If a hopper pulls an item from a chest it is pulled by hoppers underneath... if it is placed (or pushed into by another hopper) into a hopper, it will take a different priority... that certainly seems like a bug to me!!

Issue still present in snapshot 12w03a 😞

Since any issue relating to item transferring through hoppers is considered a duplicate with this, despite the specific nature of this Bug post... I will just like to point out a SIMILAR but definably different issue I am having with hoppers... That is a problem with their priorities, and that they don't seem to be consistent, and seem to change depending on if blocks are placed/removed around them (an updating issue?). This is especially the case when you have a hopper pushing items to a chest by its side, and another hopper under this first hopper. If this is built, initially the hopper below will take priority and will pull items from the above hopper before it gets the chance to push them into the chest. However after some block refreshing and/or restarting the game, the priority changes and the hopper now always pushes items into the chest. This issue seems to be more present, when a third hopper is feeding items into the inconsistent hopper - if this is the case items more often are pushed into the chest. However if items are placed STRAIGHT into the inconsistent hopper, then they will be pulled by the hopper below.

Anyone get something similar? I'm fairly sure this is subtly unique to this Bug report, yet its implications mean different things.

Also - I can't consistently recreate this bug - it appears to be from the latest 13w02b snapshot... looks to be something to do with block updating / hopper orientation as re-placeing hoppers sometimes fixes the issue but if other hoppers/blocks are placed nearby then the issue comes back.

I found an interesting quirk with this bug... if you have a the same setup on both sides of Chest A (so another hopper (say hopper C) pushing items into Chest A on its right, and another hopper under this (Hopper D)). (so it symmetrical pretty much)... I find that an item placed into Hopper A will be pushed to Chest A (incorrectly), but items placed in Hopper C don't get pushed into Chest A and are pulled by the hopper (D) underneath (correctly).