Using this blog post as a guide, I have wrapped a WAB application in a ASP.NET MVC 5 app with .Net Authentication, and all is functioning and working fabulously... except... when viewing the map from a desktop/laptop it seems to be rendering some of the content with the mobile css.
For example, the splash screen opens up full-screen, the popups open as a mobile popup, and there are some other panel styling seems incorrect. Also, when viewing it on a mobile device it is not using the mobile css.
I've been monitoring the network calls and it seems like all the appropriate css files/content is loading?
Any suggestions or nudges in the right direction to solve this would be greatly appreciated.