To reproduce:
-add a RadDock with a ToolWindow
-add some controls inside the ToolWindow and anchor them to Left, Bottom, Right
-use RadDock Advanced layout designer to set the ToolWindow as unpinned.
-run the project and notice that when showing the ToolWindow its child controls are not positioned correctly (compared to at design time).

Workaround: use RadPanel docked to the ToolWindow as parent container and position all anchored controls inside it