I expected the tall grass to have the right hitbox.
What actually happend was the tall grass's hitbox did not match up correctly
to reproduce it:
1. place tall grass in the world
2. mouse over it to see hitbox
3.hit box is off centerd
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
The grass is off centre on purpose to create a sense of randomness to the landscape.
Not a bug.