I've configured the showcase web app template to preview some data in our hub premium site. The app and all data is shared with everyone and shared to the hub content group. When I open the app from ArcGIS online, it loads fine. But when I open through hub or try to embed it in the page, it just appears blank like this:
How it should look:
Hi Anneka France,
I don't believe that Hub currently supports embedding Showcase apps and should instead send users to the app on ArcGIS Online using an external link. Just to confirm, when you click and open the app while on your Hub site, do you see the blank page while you're still on the site or are you redirected outside of Hub?
Thanks for the update. I've tested the app on multiple browsers and computers without seeing a loading issue. We'll take a look at the support bug and see if there's an embedding issue on our end.