Fixed resize bug on desktop fw

web/desktop.system

@@ -2007,10 +2007,13 @@
         let minxWidth = 120;
         let minHeight = 100;
         function resizeDown(object, event) {
-            if ($(this).hasClass("fixedsize")) {
+            if (object.length > 1){
+                object = object[0];
+            }
+            if ($(object).hasClass("fixedsize")) {
                 return false;
             }
-            
+
             //Mouse down, start resizing
             resizingWindow = true;
             resizingWindowTarget = object;