🐛 Frontend: pageContext property might not be yet initialized (#4496)

Author: odeimaiz

services/static-webserver/client/source/class/osparc/desktop/StudyEditor.js

@@ -220,7 +220,15 @@ qx.Class.define("osparc.desktop.StudyEditor", {
               this.__workbenchView.openFirstNode();
               break;
           }
-          this.bind("pageContext", study.getUi(), "mode");
+          // the property might not be yet initialized
+          if (this.isPropertyInitialized("pageContext")) {
+            this.bind("pageContext", study.getUi(), "mode");
+          } else {
+            this.addListener("changePageContext", e => {
+              const pageCxt = e.getData();
+              study.getUi().setMode(pageCxt);
+            });
+          }
 
           const workbench = study.getWorkbench();
           workbench.addListener("retrieveInputs", e => {