addresing PR comments, adding what's new bugfix description

dist/preview release/what's new.md

@@ -269,6 +269,7 @@
 - Playground will now render the returned scene from createScene() when there are multiple scenes added to engine ([Kyle Belfort](https://github.com/belfortk))
 - Fixed bug so Playground will now download .env texture files to ./textures in .zip  ([Kyle Belfort](https://github.com/belfortk))
 - It was not possible to change the gaze and laser color in VR ([#7323](https://github.com/BabylonJS/Babylon.js/issues/7323)) ([RaananW](https://github.com/RaananW/))
+- Fixed issue where textures exported using Safari web browser are Y mirrored. ([#7352](https://github.com/BabylonJS/Babylon.js/issues/7352)) ([Drigax](https://github.com/drigax))
 
 ## Breaking changes
 

serializers/src/glTF/2.0/glTFExporter.ts

@@ -327,7 +327,7 @@ export class _Exporter {
     }
 
     /**
-     * Lazy load a local engine with premultiplied alpha set to false
+     * Lazy load a local engine
      */
     public _getLocalEngine(): Engine {
         if (!this._localEngine) {
@@ -335,11 +335,7 @@ export class _Exporter {
             localCanvas.id = "WriteCanvas";
             localCanvas.width = 2048;
             localCanvas.height = 2048;
-            if (Tools.IsSafari()) {
-                this._localEngine = new Engine(localCanvas, true, { premultipliedAlpha: true, preserveDrawingBuffer: true });
-            } else {
-                this._localEngine = new Engine(localCanvas, true, { premultipliedAlpha: false, preserveDrawingBuffer: true });
-            }
+            this._localEngine = new Engine(localCanvas, true, { premultipliedAlpha: Tools.IsSafari(), preserveDrawingBuffer: true });
             this._localEngine.setViewport(new Viewport(0, 0, 1, 1));
         }