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

Always open documents in full XAML view

Happy Programming