Edge Mobile on Android redirecting https-intunemam links to about:blank

Hello,

If there is a better place to make bug reports for Edge Mobile on Android, please feel free to redirect me elsewhere.

Issue:

Recent (last ~30-60 days) versions of Edge Mobile on Android are no longer correctly evaluating https-intunemam:// links, and instead always redirect to about:blank.

Details:

Users in my organization have a .Net MAUI app that uses Microsoft Graph API for a "Sign in with Microsoft" functionality. The app calls https://learn.microsoft.com/en-us/dotnet/api/microsoft.maui.applicationmodel.launcher.openasync?view=net-maui-9.0 with a link such as https-intunemam://{web address}/mobileauth?provider=microsoftgraph

Until recently, this would open Edge Mobile managed by Intune and provide SSO with the account signed into Edge.

Starting in the last 30-60 days, Edge Mobile on Android specifically no longer handles the https-intunemam link as expected. Instead, the link redirects to about:blank. Edge Mobile for iOS still works the same as before, evaluating the https-intunemam link. The .Net MAUI app code has not changed.

If we use a simple https link without the https-intunemam prefix, the link is also evaluated correctly.

https://learn.microsoft.com/en-us/dotnet/api/microsoft.maui.applicationmodel.launcher.canopenasync?view=net-maui-9.0 still returns true for Edge Mobile on Android users, indicating that Edge Mobile still registers the https-intunemam:// link 

I have read through the recent https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-mobile-stable-channel and don't see any information about a change in the behavior of https-intunemam:// links. Is this an unintended change in the browser, or something that must be set differently in the intune configuration?

Thanks for your consideration.