Thank you Sean L
I was able to replicate this a hand full of times I will see if i cannot document my exact steps here and see if anyone else can confirm I will promptly fill out that Bug report and Try to isolate this issue here.
I ended up Duplicating the Landscape Material File and Deleting All the nodes, deleting The original landscape material file and the physical Mat Files. I was able to get over this bug, however I did run into some issues later.
I followed the steps in the documentation and added the Landscape UV node. After painting for about 10 Minutes using all the Textures on one of my Tiles it instantly Became Black and blotchy, the more i painted with that material or combined with others it became a 8 bit garbled mess of colors and Black.
I was able to paint on other Tiles no issue at all, I ended up deleting that particular tile and adding it back in where i was able to correct the issue.