I have a issue with the docking manager when using floating windows is causing the following problems:
1) When resizing a floating window it resizes incorrectly, for instance if I drag the top left corner to make the window larger, the buttom right corner also resizes.
2) Sometimes when resizing or moving the floating window the main window will be resized or moved instead of the floating window.
Please see the behaviour in the attached movie file.
You samples such as DockingDemo_2008 is working fine, but the xaml in the demo and the xaml I use look very similar.
x:Name="dockingManager"
PersistState="False"
UseInteropCompatibilityMode="False"
UseDocumentContainer="True">
SyncfusionDockingIssue_2a3477d7.zip