Breaking tall grass frequently shows the animation of breaking a sunflower, even though no sunflower appears in inventory afterward. It's just an animation glitch. I noticed this in the previous snapshot as well.

(Sorry if this is a duplicate--I tried to see if this had been reported already, but I really have a lot of trouble using the search function on JIRA. It has a UI designed for computer professionals that's frankly above me. I just like to play MC, and want to help!)