First, check to confirm if this behavior happens in a web browser and in Workbench, or if it is only happening in Workbench.
- In Web Browsers and Workbench - Check your WebService’s X-Frame-Origin property, it should be set to
Sameoriginand notDeny. In Niagara 4.11 and later,Denymay be set by default
- In Workbench only - Check your Workbench version. There is a known issue in Workbench 4.10.1 that will prevent Reflow from displaying in Workbench. See Niagara 4.10.1 Compatibility for more details.