It turns out that the contents of the web app was being cached by a service worker in Chrome.
Web-app only works after reloading

Jørgen Fogh
96
Reputation points
I have deployed a ASP.NET Core 3.1 SPA using Azure Devops at https://jrgfogh-whist.azurewebsites.net/
The app is running as a Linux app service.
When I access the page from Chrome, I get the welcome page the first time and then my app when I reload the page. After that, I can load the app correctly every time, until I do a hard reload, which makes the problems reappear.
When I access the page from Edge, I get an Azure welcome page every time.
If I access the page from incognito mode in Chrome, I also get the welcome page every time.
How do I proceed to diagnose this issue?