I managed to reproduce in the attached sample a problem I started seeing in our app with the 2011.1.8 upgrade. I am not able to resize the navbar icon area with the gripper. If I comment out the line of code that sets the application theme in App.xaml.xs, then it works fine under the default theme.
Bug Report
B209016
Visible to All Users
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Hi Pedro,
Most likely, this problem is resolved in our latest update - 2011.1.9.
Please update to this release and let us know the results.
Thanks,
Andrew