It's completely normal. As mentioned above, if you try to place a block where the ladder has been placed, the block will be placed one block behind because that place in which you tried to place the block is already occupied.
I'm one of those few people that don't mine after they are well established. What I do is delete the world when I think I've done enough on a particular world.
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You really want that to happen...?
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Why do we live on earth?
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Note that these are not in any particular order.
1.Slayer
2.System of a Down
3.Alice in Chains
4.Nirvana
5.Pantera
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Why do circles look so smooth?
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Can we party together?
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Don't be so rude bro...
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