The WpfEditor doesn't create a new device anymore every time it receives focus. StateObjects get recreated if the used device changes and they get disposed if the parent GraphicsDevice gets disposed.
Upgrade: New Version of LabDefaultTemplate.xaml. To upgrade your build definitions, please visit the following link: http://go.microsoft.com/fwlink/?LinkId=254563
Description
Languages
C#
75.7%
HTML
21.6%
HLSL
2.5%