Updated builds.

build/three.js

@@ -18176,7 +18176,11 @@
 						session.updateRenderState({
 							baseLayer: glBaseLayer
 						});
-						newRenderTarget = new WebGLRenderTarget(glBaseLayer.framebufferWidth, glBaseLayer.framebufferHeight);
+						newRenderTarget = new WebGLRenderTarget(glBaseLayer.framebufferWidth, glBaseLayer.framebufferHeight, {
+							format: RGBAFormat,
+							type: UnsignedByteType,
+							encoding: renderer.outputEncoding
+						});
 					} else {
 						isMultisample = attributes.antialias;
 						let depthFormat = null;

build/three.module.js

@@ -24508,7 +24508,12 @@ class WebXRManager extends EventDispatcher {
 
 					newRenderTarget = new WebGLRenderTarget(
 						glBaseLayer.framebufferWidth,
-						glBaseLayer.framebufferHeight
+						glBaseLayer.framebufferHeight,
+						{
+							format: RGBAFormat,
+							type: UnsignedByteType,
+							encoding: renderer.outputEncoding
+						}
 					);
 
 				} else {