Cannot allow site permissions Edge + MHS

We are deploying Edge in Managed Home Screen on our Android shared device (with Azure AD). When browsing to a web site that asks for permissions (Location, Camera, etc) we get the pop-up for selecting Block or Allow but the nothing happens when tapping any option.
If we exit kiosk-mode (turn of Managed Home Screen) it works as expected, but as soon as MHS is active we cannot grant any site permissions.

One workaround we found is to refresh the site several times and then tap the padlock in the address bar. The permission is now set to "automatically blocked" and can be changed to "allowed" but this is not a very user friendly way of course.

I should also inform that the overlay detection setting in Edge is disabled.

Please advice!
//Niklas