I'm running VS2015 Community on Windows 8.1 (still waiting for Windows 10 to download and install). I have a Nokia 635 with Windows 10 insider (latest as of two days ago).
If I start a new Project > Templates > Visual C# > Windows > Windows 8 > Windows Phone > Blank App, and then open the MainPage.xaml file, the designer is present and works fine.
But if I start a new Project > Templates > Visual C# > Windows > Universal > Blank App, and then open the MainPage.xaml, no designer is present. No errors, no empty pane, just nothing. Even control toolbox is empty. Like designer
is not supported. I can manually type in xaml content and compile and deploy to device or to emulator and the app UI is there and functional.
I tried to post a photo, but forum won't let me post a photo or links yet.
Thanks!