Scaffolding floating strange

Experiment material:
*Original Minecraft
Explanation of complaints:
When I dropped the scaffolding in my test, there was an oddity that is still sticking when it exceeds 6 distances to the east and it's not solid.
Steps to try scaffolding bug:
1. Open the open world in far test
2. Command for /fill ~ ~ ~ ~16 ~-16 ~16
3. The game will lag because too much falling scaffolding

4. Strange scaffolding to begin when than 6 block to right/left

5. Oddities begin to occur.
The result:
Scaffolding does not fall more than 6 blocks north / south / west / east and only 2/3 falls to the ground. This is very strange. Not only that version, but it happened in version 1.8-now