When player looks at non-full blocks, then attempts to place a block of the same or similar type, the block being looked at is ignored and the block being placed is then placed "through" or behind the already placed block.

Similarly, when attempting to break a block directly in front of the player, the block(s) behind are broken instead.

Blocks effected (so far):

Chests

Stairs

I was crouched at the time of the bug occurrence.

Attached is a screenshot displaying (2) single chests being placed directly behind the double chest, instead of in front, as intended.