App loads twice

[Kevin_Sieger]

As far as I understand it this has to do with preloading magic shopify does.

Afaik this is what’s resulting in your app being called twice.

Blocked script execution in <URL> because the document's frame is sandboxed and the 'allow-scripts' permission is not set

This error fundamentally cannot block your app’s CSS when your app is actually loaded (to be shown on screen). What’s happening here is that we use a sandboxed iframe to preload your app before loading it for real in a different iframe. The preloading sandbox iframe intentionally prevents JS from loading (which results in those “errors” in your console), but that frame is never shown on screen. It is removed the moment your app begins loading for real. Your app is loaded in a totally separate …

Kevin