Update builds.

build/three.js

@@ -14512,6 +14512,17 @@
 			if (currentBoundFramebuffers[target] !== framebuffer) {
 				gl.bindFramebuffer(target, framebuffer);
 				currentBoundFramebuffers[target] = framebuffer;
+
+				if (isWebGL2) {
+					// gl.DRAW_FRAMEBUFFER is equivalent to gl.FRAMEBUFFER
+					if (target === gl.DRAW_FRAMEBUFFER) {
+						currentBoundFramebuffers[gl.FRAMEBUFFER] = framebuffer;
+					}
+
+					if (target === gl.FRAMEBUFFER) {
+						currentBoundFramebuffers[gl.DRAW_FRAMEBUFFER] = framebuffer;
+					}
+				}
 			}
 		}
 
@@ -15739,18 +15750,19 @@
 		function updateMultisampleRenderTarget(renderTarget) {
 			if (renderTarget.isWebGLMultisampleRenderTarget) {
 				if (isWebGL2) {
-					const renderTargetProperties = properties.get(renderTarget);
-					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
-					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
 					const width = renderTarget.width;
 					const height = renderTarget.height;
 					let mask = _gl.COLOR_BUFFER_BIT;
 					if (renderTarget.depthBuffer) mask |= _gl.DEPTH_BUFFER_BIT;
 					if (renderTarget.stencilBuffer) mask |= _gl.STENCIL_BUFFER_BIT;
+					const renderTargetProperties = properties.get(renderTarget);
+					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
+					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
 
 					_gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST);
 
-					state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer); // see #18905
+					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, null);
+					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
 				} else {
 					console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
 				}

build/three.module.js

@@ -19676,6 +19676,24 @@ function WebGLState( gl, extensions, capabilities ) {
 
 			currentBoundFramebuffers[ target ] = framebuffer;
 
+			if ( isWebGL2 ) {
+
+				// 36009 is equivalent to 36160
+
+				if ( target === 36009 ) {
+
+					currentBoundFramebuffers[ 36160 ] = framebuffer;
+
+				}
+
+				if ( target === 36160 ) {
+
+					currentBoundFramebuffers[ 36009 ] = framebuffer;
+
+				}
+
+			}
+
 		}
 
 	}
@@ -21470,11 +21488,6 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 			if ( isWebGL2 ) {
 
-				const renderTargetProperties = properties.get( renderTarget );
-
-				state.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
-				state.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );
-
 				const width = renderTarget.width;
 				const height = renderTarget.height;
 				let mask = 16384;
@@ -21482,9 +21495,15 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 				if ( renderTarget.depthBuffer ) mask |= 256;
 				if ( renderTarget.stencilBuffer ) mask |= 1024;
 
+				const renderTargetProperties = properties.get( renderTarget );
+
+				state.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
+				state.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );
+
 				_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );
 
-				state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer ); // see #18905
+				state.bindFramebuffer( 36008, null );
+				state.bindFramebuffer( 36009, renderTargetProperties.__webglMultisampledFramebuffer );
 
 			} else {