When opening a XAML document in Visual Studio, it opens in split view by default. This might become little annoying when you have a large XAML document, because all the content needs to be rendered before you can get some work done.
You can fix this issue by modifying Visual Studio settings
- Go to Tools, Options.
- Under Text Editor open the XAML section and select Miscellaneous.
- Under Default View check the Always open documents in full XAML view box
- Click OK to Apply