fix occasional crash on mac

com.unity.uiwidgets/Runtime/foundation/debug.cs

         public static bool debugCheckIntrinsicSizes = false;
 
         public static bool debugPrintMouseHoverEvents = false;
+        
+        static bool debugEnableAtRuntimeInternal = false;
 
         public static HSVColor debugCurrentRepaintColor =
             HSVColor.fromAHSV(0.4f, 60.0f, 1.0f, 1.0f);
             }
         }
 #else
-        private const bool internalEnableDebugAtRuntime = false;
-        public static bool enableDebug => internalEnableDebugAtRuntime;
+        public static bool enableDebug => debugEnableAtRuntimeInternal;
 #endif
 
         public static void _debugDrawDoubleRect(Canvas canvas, Rect outerRect, Rect innerRect, Color color) { 

engine/src/shell/platform/unity/darwin/macos/unity_surface_manager.mm

   default_fbo_ = 0;
 
   FML_DCHECK(gl_tex_ != 0);
-  glDeleteTextures(1, &gl_tex_);
+  //gl_tex_ will be released in CVOpenGLTextureRelease
+  //glDeleteTextures(1, &gl_tex_);
   gl_tex_ = 0;
 
   CVOpenGLTextureCacheRelease(gl_tex_cache_ref_);