I have a very experimental build that just came out about 12 hours and 49 minutes ago as of this posting. The game runs very well, I don't see any visual glitching thus far, and the grass is actually present in the intro. The only issue I'm currently having is that there's no sound in the intro or during gameplay.
Addendum 9/10/2018 1:37 PM
Only visual hiccup I've come across so far is that the... uhh, what are those things called?
You know, the giant things in the caves of La-Lakoosha that inhale and eat anything that goes near them?
Those things, they're kind of... well, plainly visible when they shouldn't be.