We believe the problem is with the Shopify Admin (or browser?) cancelling the first request to fetch our app, and then firing a second request. It seems the automated test only waits for the response of the first request, and assumes the app does not load. (see attached image)
@h_miniz Did they mention if they would notify developers in any way when they solve the issue? How did you contact the Shopify team so we know for future reference?
I did contact support team, and that’s what they replied. However, I believe there is another issue regarding “There’s No Page At This Address” error message happening to us, and I am not sure if other partners are facing it or not.