When some villagers start to work at their own work site,the actions of all the creatures around will slow down.At this time no matter you throw things,refine medicine or smelt something ,even the red stone device will become stuck and slow down.These problems will continue until the villagers stop working!
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Thank you for your report!
We're actually already tracking this issue under MCPE-64344 so I've requested this report be resolved and linked as a duplicate.
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