Set pass size in EffectComposer.insertPass

examples/jsm/postprocessing/EffectComposer.js

@@ -97,6 +97,7 @@ Object.assign( EffectComposer.prototype, {
 	insertPass: function ( pass, index ) {
 
 		this.passes.splice( index, 0, pass );
+		pass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );
 
 	},