Shapes without NiTexturingProperty are rendered

When using the Pixelwind V2 texture pack (or Unification Compilation: Nature), trees in the Ascadian Isles near Pelagiad are sometimes white. As you walk around, they flicker between looking as expected and white. Not all of the trees do this (that I've seen.)

This happens as of the latest commit, I've tested it on Linux but I believe it happens on Windows as well. I'm using an Nvidia GPU with proprietary drivers.