The bug
Comparators won't give output when near a container that got items in it without updating it.
Confirmed with:
Dropper
Dispenser
Furnace
Hopper
Chests - fed with hopper or dropper
Jukebox
Brewing Stand
Linked issues
is duplicated by
MC-122194
Comparators don't work
MC-122301
My red stone doesn't seem to be working.
MC-122353
Redstone Comparator not working properly
MC-122387
Comparators fail to work correctly with hoppers, droppers, dispensers in 1.13
MC-122396
Hopper can not weigh items.
MC-122399
Comparator can not weigh items. Bug
MC-122459
Comparators need updates to work
MC-122604
17w48a comparator does not register a dropper
MC-122669
Comparator doesn't update with Hoppers, Dispensers, etc
MC-122690
Item sorters no longer work
MC-122697
Comparator needs an blockupdate
MC-122760
Comparator requires a block update for certain blocks
MC-122849
Comparator not detect
MC-122884
Comparators attached to hoppers have varied outputs
MC-122923
Comparator need an update to change
MC-123005
Comparators & Hoppers (detecting Bug)
MC-123036
comparator doesn't work properly
MC-123042
Comparator does not output signal from hopper.
Attachments
Comments
Droppers and dispensers doesn't cause the comparator to update either.
A block update near the comparator will update its value.
Chests, trapped chests and cauldrons works fine.
Confirmed with:
Dropper
Dispenser
Furnace
Hopper
Chests - fed with hopper or dropper
Jukebox
Brewing Stand
When placing items manually in a chest, the comparator is updated only when closing.
Comparators also seem slow to update when reading minecarts with hopper or chest.
Also Confirmed:
Shulker Boxes
Amokra
Guess I'll just add my two cents worth
It works with redstone torches.
NeunEinser
Dupe of MC-120986.
Not the same, this started in the snapshots.
NeunEinser
The issue got worse in the snapshots, but I updated my issue for 17w47b, so it does describe everything that is mentioned here.
NeunEinser
Or should I revert the changes I did on my ticket so that the devs or more likely do notice this ticket, because it is newer and exclusively describes the changed behavior in the snapshots?
Because this is new behavior in the snapshots, I doubt it's the same cause in the code. Leaving is separate.
Also, the devs tend to prefer fixing issues from the snapshot first, so this may pop up for them then, making is fixed (a lot) earlier (which may lead them to your ticket too). 🙂
I made a duplicate ticket - has a extra tidbit of info. Comparators update their signal when you right click on them, but will retain the last input after right clicking. So if you right click the comparator with an item in the hopper, it gets an input state. Take the items out, and it will be stuck. Right click a couple times and it will reset.
MC-122884
Erik Broes
I've had this happen as well.