When in a Beacon page ( where you choose your powers ) you can actually duplicate your items by clicking repeatedly on them

MEQS_KEEP_PRIVATE

Thank you for your report!
We're actually already tracking this issue as MCPE-86009 (private), so this ticket is being resolved and linked as a duplicate.

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i hope you can fix it because players can sort of cheat in survival Minecraft which is not right thanks for fixing this issue

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