When you create a superflat world, with bedrock either being the top and\or the only layer, the game glitches out and when too many blocks are placed in the world (23-46 blocks), some of the blocks disappear, but not completely, kinda like barrier-blocks.

I created a superflat world with bedrock being the only layer.

What happened was the world glitched out (blocks were disappearing and the bedrock texture started distorting)

Steps to Reproduce:
1. Make a superflat world, with bedrock being either the only and/or top layer.

2. Place a few blocks (I used Stone) side by side.

3. Watch as the glitchy madness unfolds!