MSIX packages not consistently mounted on the assigned WVD hosts.

Question

Hello Community

We have a WVD Pool where we Use the preview Feature of app attach in the Azure Portal.
https://learn.microsoft.com/en-us/azure/virtual-desktop/app-attach-azure-portal

MSIX packages of various software applications have been created, but are not consistently mounted on the assigned WVD hosts.
Partly yes, and for the most part not, although the authorizations of both users are identical and we could not find any necessary logs that lead us to the root Case of this Issue.

So we deleted this User Profile connect again and the Issue was gone.
All Packages are installed as expected.
we also could not detect any Temp Profile for the User so that we can say the Profile was corrupt.

because we are in a productive environment, we would like to know what could be the root cause of this issue so that we can prevent this in the Further.
Did you have an idea what could be the root of this Issue?

Many Thanks for Helping here