Yes, that section on the bottom disappears. This happens especially when I get close to the mesh and look up but no matter how close or far the camera is this problem happens and it doesn’t matter how big or small the terrain is either. Zooming the camera out helps though.
But the terrain is setup with the following (This isn’t the exact code though)
totalSize = 513 // Is that too small?
patchSize = 65
terrain.setLocalTranslation(0, -50, 0);
terrain.setLocalScale(2f, 1f, 2f);
// When I remove this the problem still exists.
control.setLodCalculator(new DistanceLodCalculator(getPatchSize(), 1.5f));