Terrain Painting not adding layers (ONLY AFTER I USED WORLD COMP)


I had an amazing texture set up that I was using on a not so optimized terrain. So I created a tiled landscape from height maps and uploaded it via world composition. Now when I compile the shader it only shows the mountain layer, the grass layer will not show. Is this a known issue, am I doing something wrong? What is the work around for this because its severely hindering my progress. Below is the picture of my grass, the layer that is not showing.

Well I fixed that issue now its just not allowing me to actually paint on the terrain, just filling in the whole component with the texture I pick… Pretty annoying I seem to be running into issues everywhere, there has been countless threads I have read with the same problem and no actual solutions.