Merge pull request #17652 from Mugen87/dev9

WebGLRenderer: Add comment for material.uniformsNeedUpdate check.

src/renderers/WebGLRenderer.js

@@ -1985,7 +1985,7 @@ function WebGLRenderer( parameters ) {
 
 			if ( material.isShaderMaterial ) {
 
-				material.uniformsNeedUpdate = false;
+				material.uniformsNeedUpdate = false; // #15581
 
 			}