1. You can place sand or gravel in the air, and it wont fall to the ground
2. if it falls down, it will jump around 0.5 blocks in one direction
What I expected to happen was...:
falling sand/gravel
What actually happened was...:
floating sand or wrong falling
Steps to Reproduce:
1. create a new World (creative, with cheats)
2. teleport to e.g. /tp @p 29999999 80 29999999
(other coordinates work aswell, but you have to be at one border of the world )
3. build a tower with dirt , and place some blocks on that
4.1. you will see, that some blocks fall down, and some will stay in the air (see: 2013-12-22_17.46.56.png)
4.2. some blocks will fall down, but they will fall at the wrong place (see: 2013-12-22_17.40.41.png; 2013-12-22_17.40.45.png) and on the ground, they will be placed back to the right place)
Linked issues
Attachments
Comments

First off: If you want to report any other bugs, make sure you have your Java version up-to-date.
Duplicate of Unresolved
MC-3718
If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.