This makes sure that the lights are counted correctly based on their visibility. This fixes #4439.

src/renderers/WebGLRenderer.js

@@ -6517,7 +6517,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 			var light = lights[ l ];
 
-			if ( light.onlyShadow ) continue;
+			if ( light.onlyShadow || light.visible === false ) continue;
 
 			if ( light instanceof THREE.DirectionalLight ) dirLights ++;
 			if ( light instanceof THREE.PointLight ) pointLights ++;