diff --git a/src/Three.TSL.js b/src/Three.TSL.js
index c99f306c3dc111..296e3e0fa43b1e 100644
--- a/src/Three.TSL.js
+++ b/src/Three.TSL.js
@@ -52,7 +52,6 @@ export const anisotropy = TSL.anisotropy;
 export const anisotropyB = TSL.anisotropyB;
 export const anisotropyT = TSL.anisotropyT;
 export const any = TSL.any;
-export const append = TSL.append;
 export const array = TSL.array;
 export const asin = TSL.asin;
 export const asinh = TSL.asinh;
diff --git a/src/renderers/common/Renderer.js b/src/renderers/common/Renderer.js
index c08d24c0438d1d..b906c1eaca6d54 100644
--- a/src/renderers/common/Renderer.js
+++ b/src/renderers/common/Renderer.js
@@ -1552,12 +1552,7 @@ class Renderer {
 	 */
 	_getFrameBufferTarget() {
 
-		const { currentToneMapping, currentColorSpace } = this;
-
-		const useToneMapping = currentToneMapping !== NoToneMapping;
-		const useColorSpace = currentColorSpace !== ColorManagement.workingColorSpace;
-
-		if ( useToneMapping === false && useColorSpace === false ) return null;
+		if ( this.needsFrameBufferTarget === false ) return null;
 
 		const { width, height } = this.getDrawingBufferSize( _drawingBufferSize );
 		const { depth, stencil } = this;
@@ -2601,6 +2596,7 @@ class Renderer {
 	 * Returns `true` if a framebuffer target is needed to perform tone mapping or color space conversion.
 	 * If this is the case, the renderer allocates an internal render target for that purpose.
 	 *
+	 * @type {boolean}
 	 */
 	get needsFrameBufferTarget() {
 
diff --git a/src/renderers/common/XRManager.js b/src/renderers/common/XRManager.js
index b320a717f40359..62529f08dc2d57 100644
--- a/src/renderers/common/XRManager.js
+++ b/src/renderers/common/XRManager.js
@@ -238,6 +238,15 @@ class XRManager extends EventDispatcher {
 		 */
 		this._currentSize = new Vector2();
 
+		/**
+		 * Holds a reference to the user camera and its current settings.
+		 *
+		 * @private
+		 * @type {?Object}
+		 * @default null
+		 */
+		this._currentCameraSettings = null;
+
 		/**
 		 * The default event listener for handling events inside a XR session.
 		 *
@@ -1428,6 +1437,12 @@ class XRManager extends EventDispatcher {
 
 		// update user camera and its children
 
+		if ( this._currentCameraSettings === null && camera.isPerspectiveCamera ) {
+
+			this._currentCameraSettings = { camera: camera, fov: camera.fov, zoom: camera.zoom };
+
+		}
+
 		updateUserCamera( camera, cameraXR, parent );
 
 
@@ -1713,6 +1728,18 @@ function onSessionEnd() {
 	renderer.setPixelRatio( this._currentPixelRatio );
 	renderer.setSize( this._currentSize.width, this._currentSize.height, false );
 
+	if ( this._currentCameraSettings !== null ) {
+
+		const camera = this._currentCameraSettings.camera;
+
+		camera.fov = this._currentCameraSettings.fov;
+		camera.zoom = this._currentCameraSettings.zoom;
+		camera.updateProjectionMatrix();
+
+		this._currentCameraSettings = null;
+
+	}
+
 	this.dispatchEvent( { type: 'sessionend' } );
 
 }
diff --git a/src/renderers/webxr/WebXRManager.js b/src/renderers/webxr/WebXRManager.js
index f66eff10afd86e..6acad3bd051e7b 100644
--- a/src/renderers/webxr/WebXRManager.js
+++ b/src/renderers/webxr/WebXRManager.js
@@ -67,6 +67,7 @@ class WebXRManager extends EventDispatcher {
 
 		const currentSize = new Vector2();
 		let currentPixelRatio = null;
+		let currentCameraSettings = null;
 
 		//
 
@@ -262,6 +263,18 @@ class WebXRManager extends EventDispatcher {
 			renderer.setPixelRatio( currentPixelRatio );
 			renderer.setSize( currentSize.width, currentSize.height, false );
 
+			if ( currentCameraSettings !== null ) {
+
+				const camera = currentCameraSettings.camera;
+
+				camera.fov = currentCameraSettings.fov;
+				camera.zoom = currentCameraSettings.zoom;
+				camera.updateProjectionMatrix();
+
+				currentCameraSettings = null;
+
+			}
+
 			scope.dispatchEvent( { type: 'sessionend' } );
 
 		}
@@ -783,6 +796,12 @@ class WebXRManager extends EventDispatcher {
 
 			// update user camera and its children
 
+			if ( currentCameraSettings === null && camera.isPerspectiveCamera ) {
+
+				currentCameraSettings = { camera: camera, fov: camera.fov, zoom: camera.zoom };
+
+			}
+
 			updateUserCamera( camera, cameraXR, parent );
 
 		};