MC-192577If holding down swap hands key over output of furnace, item occasionally is invisible until updated
The bug
If holding down your swap hands key (default "f") over the output slot of a furnace, when the furnace finishes cooking whatever it was cooking, occasionally, no item will show up in the offhand. This is not actually true, because if you click the swap hands key again over an empty slot in your inventory, the item from your offhand will show itself.
How to reproduce
- Put fuel and a smeltable item in a furnace
- As the item is getting closer to being smelted, hold in swap hands key over output of furnace
Occasionally, notice that no item shows in offhand
Linked Issues
Attachments1
- Unresolved
![[Mod] markderickson](../../../data/avatars/users/18946.svg)
[Mod] markderickson- 2
- 4
- Community Consensus
Low- Platform
- Inventory
- furnace inventory-desync off-hand
1.16.1 - 23w51b
1.16.1 20w27a 20w28a 20w29a 20w30a 1.16.2-pre1 1.16.2-pre2 1.16.2-pre3 1.16.2-rc1 1.16.2-rc2 1.16.2 1.16.3-rc1 1.16.3 1.16.4-pre1 1.16.4-pre2 1.16.4-rc1 1.16.4 20w45a 20w46a 20w48a 20w49a 20w51a 21w03a 21w05b 21w06a 21w07a 21w08b 21w10a 21w11a 21w13a 21w14a 21w38a 21w39a 1.19.2 1.19.4 23w51b
Created Issue:
If holding down swap hands key over output of furnace, item is invisible until updated
If holding down your swap hands key (usually "f") over output slot of furnace, when the furnace finishes cooking whatever it was cooking, occasionally, no item will show up in the offhand, and the number of items in the top slot of the furnace will remain unchanged. This is not actually true, because if you click on the items in the top half of the furnace, the number will change to what it really is. Also, if you click the swap hands key again over an empty slot in your inventory and then click, the item from your offhand will show itself.
NOTE: this only happens on occasion (for me, average every 3 items smelted)
How to reproduce:
- Put fuel and item in furnace
- As the item is getting closer to being smelted, hold in swap hands key over output of furnace
- Occasionally, notice that no item shows in offhand and items being smelted remains unchanged.
I'll attach a screen recording of this.
Note #2: I didn't have much time to check if this is duplicating anything. If it is, I'm sorry about that
![[Mojang] slicedlime](../../../data/assets/gravatar/slicedlime.jpeg){kind=small}
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
![[Mod] SPGoding](../../../data/avatars/users/44622.png){kind=small}
relates to
If holding down swap hands key over output of furnace, item occasionally is invisible until updated
If holding down your swap hands key (
usually"f") over output slot of furnace, when the furnace finishes cooking whatever it was cooking, occasionally, no item will show up in the offhand, and the number of items in the top slot of the furnace will remain unchanged. This is not actually true, because if you click on the items in the top half of the furnace, the number will change to what it really is. Also,if you click the swap hands key again over an empty slot in your inventoryand then click, the item from your offhand will show itself.NOTE: this only happens on occasion (for me, average every 3 items smelted)
How to reproduce:
- Put fuel and item in furnace
- As the item is getting closer to being smelted, hold in swap hands key over output of furnace
- Occasionally, notice that no item shows in offhand and items being smelted remains unchanged.
I'll attach a screen recording of this.
Note #2: I didn't have much time to check if this is duplicating anything. If it is, I'm sorry about that
The bug
If holding down your swap hands key (default "f") over the output slot of a furnace, when the furnace finishes cooking whatever it was cooking, occasionally, no item will show up in the offhand. This is not actually true, because if you click the swap hands key again over an empty slot in your inventory, the item from your offhand will show itself.
How to reproduce
- Put fuel and a smeltable item in a furnace
- As the item is getting closer to being smelted, hold in swap hands key over output of furnace
Same thing happens when you speedily, repeatedly shift click on the output until the furnace has smelted one item. The item disappeares and is invisible in your inventory until you update it by taking out the item in the top furnace slot (which still renders even though it is gone), or clicking the place where the item is supposed to be (or the stack that it's number is not appearing on).
This has changed in 21w10a. Previously, the number of items in the furnace slot would not update until the item that was brought into the offhand was updated. Now, the number of items updates immediately in the furnace, despite the item brought into the offhand not showing. Additionally, the player previously needed to click once on the empty slot where the offhand item was brought for it to reveal itself. Now, they do not have to complete this step to reproduce this issue.