making a fully automatic potion brewer, i noticed that items in the 5 slots of a hopper dont always flow from the left to the right in other words nether wart n 1st slot magma cream in second slot redstone dust in third slot, moving through the hoppers through 5 hoppers to be specific, items sometimes doesn't flow from slot 1,2,3.. sometimes after the 1st slot nether wart goes in to the brewing stand the 3 slot redstone dust will jump ahead of slot 2 magma cream. testing this several times. it failed to work a few times properly, sorry i cant provide a more accurate of a count, sometimes the items flow correctly sometimes the items jump as stated earlier. i can't say that its a lag issue cause all the other redstone projects in the test world are broken because they relied on the bud switch or quasi-connectivity, the xbox one edition has. i was sad to see that go, but.. i will continue testing this, in hopes of finding a work around or possibly creating a YouTube video. to better show you this issue.