Breaking blocks while sneaking on a ladder can cause the block to be broken delayed. This only happens if you start sneaking after already being in the process of breaking a block. I tested it from versions 1.18.1 to 22w16b.
Steps to reproduce:
Place a ladder and have a block to break (easiest if under you)
Break the block but halfway through breaking it, start to sneak
Wait, until the block should be destroyed (should work with every Tool/Block that doesn't break instantly unlike tnt or slime blocks)
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We're tracking this issue in MC-190551, so this ticket is being resolved and linked as a duplicate.
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