Whenever you crouch while looking at a block on the same Y level as your feet, the top three pixels of the block will, as I said in my summary, it transfers you to the block that is at the same Y level as your head.
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We're tracking this issue in MCPE-167559, so this ticket is being resolved and linked as a duplicate.
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So ya I can confirm this is happening and Iβd like to add that itβs increased the difficulty of quick placing blocks as they will shoot up or they will skip and place wrong.Β