Usually, when I play I like to mine blocks for hours just to give the materials to my friends but since the recent update almost every time I mine a block it'll show the animation that it has been broken but no item has been dropped and it will reappear. I currently don't have any clips of this happening but I am sure other people have experienced this problem.
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We're tracking this issue in MCPE-48914, so this ticket is being resolved and linked as a duplicate.
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