Comments: ** Comment from web user: maratmusaev **
Here is the sample app attached. I have three xml files that contain layout of the windows. They are called LayoutXml1, LayoutXml2 and LayoutXml3. Using combo box you can load those different layouts.
The layout that we want is LayoutXml2.xml file which is "No Document" option in the combo box. LayoutXml2 option does not have LayoutDocumentPaneGroup, which causes this issue of docking everything to the right.
LayoutXml1 and LayoutXml3 work correctly when clicking auto hide - docks in a right position not everything to the right of main window. However, LayoutXml1 has a big gap between Window2/Window3 and Window4. If I could get right this gap than I would use this option. This gap is due to the presence LayoutDocumentPaneGroup. LayoutXml3 has tabbed document which is not what we want.
Let me if this is clear.