Updated builds.

build/three.cjs

@@ -14871,8 +14871,9 @@ function WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha,
 
 			if ( background.isCubeTexture && background.isRenderTargetTexture === false ) {
 
-				// environment maps which are no cube render targets or PMREMs follow a different px/nx convention
-				_e1$1.x *= - 1;
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1$1.y *= - 1;
+				_e1$1.z *= - 1;
 
 			}
 
@@ -27938,8 +27939,9 @@ function WebGLMaterials( renderer, properties ) {
 
 			if ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) {
 
-				// environment maps which are no cube render targets or PMREMs follow a different px/nx convention
-				_e1.x *= - 1;
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1.y *= - 1;
+				_e1.z *= - 1;
 
 			}
 

build/three.module.js

@@ -14869,8 +14869,9 @@ function WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha,
 
 			if ( background.isCubeTexture && background.isRenderTargetTexture === false ) {
 
-				// environment maps which are no cube render targets or PMREMs follow a different px/nx convention
-				_e1$1.x *= - 1;
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1$1.y *= - 1;
+				_e1$1.z *= - 1;
 
 			}
 
@@ -27936,8 +27937,9 @@ function WebGLMaterials( renderer, properties ) {
 
 			if ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) {
 
-				// environment maps which are no cube render targets or PMREMs follow a different px/nx convention
-				_e1.x *= - 1;
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1.y *= - 1;
+				_e1.z *= - 1;
 
 			}