I like to know why the green tree leaves with alpha are displayed incorrect. Do you know?
This is due to the way OpenGL z-sorts alpha-textured polygons. And you can’t really change it. Although the problem ususally goes away when you enter game mode(‘p’ key). Sometimes, i find by selecting/deselecting all the objects, the draw bug disappears. Try it.
I think that I found solution:
hotkey Ctrl+F in object mode