I’m working away on my .Net 8 MAUI application. Everything is working fine. I think about developing in .Net 9 Preview 3 , so I installed the SDK, but when I turn on “Preview Features / Use previews of .Net SDK” the application breaks.

Before, everything ok.

Turn on preview .Net SDK

After, my phone is missing and lots of other problems.

When I Turn OFF the Preview .Net SDK everything works again.