Corrected resizing with changed width in editor

javascript/src/Plugins/qfq.fabric.js

@@ -297,7 +297,7 @@ $(function (n) {
         this.generateCanvas(width, height);
         if (this.outputField.val()) {
             this.canvas.loadFromJSON(this.outputField.val(), function() {
-                that.setBackground();
+                that.resizeCanvas();
                 that.setBrush();
                 that.canvas.renderAll();
                 that.userChangePossible = true;