solves issue #12010

examples/js/postprocessing/OutlinePass.js

@@ -186,7 +186,7 @@ THREE.OutlinePass.prototype = Object.assign( Object.create( THREE.Pass.prototype
 
 		function VisibilityChangeCallBack( object ) {
 
-			if ( object instanceof THREE.Mesh ) {
+			if ( object instanceof THREE.Mesh || object instanceof THREE.Line || object instanceof THREE.Sprite ) {
 
 				var bFound = false;