Opening the furnace UI after it is done smelting something presents the smelting-state arrow in a oddly mid-smeltage stage. It doesn't seem to affect the amount of items smelted (xp untested) and resets when you start smelting something else again. It doesn't happen when the fuel runs out with the UI still open.
MCPE-65759
Furnace UI - Little visual error
Resolved
Duplicate
0
CoalBuster
(Unassigned)
Unconfirmed
Android
Android 9
1.16.0.51 Beta
Retrieved
Thank you for your report!
We're actually already tracking this issue at MCPE-63099, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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