I am also having the same issue on the windwos 10 Image with Appvolumes 2.10 Writable UIA+Profile. ?
I ended up putting the powershell command into the shellstart.bat script within the Writable Volume template so it executes before the explorer process starts up. However, it does increase the login time to shell rather significantly.
It seems Writable Volumes' inability to support Universal Apps affects even those that are built-in to the system, which includes Edge browser. Oddly, however, only the Edge browser has this problem, and not for apps like Calculator. Given that Edge browser also serves as a new default PDF viewer in Windows 10, it's rather critical to get it working properly.