xceedsoftware/wpftoolkit#1460
It is not possible to setup anchorable in a way that dissallows user to drag/move it to the document pane.
Hi,
The LayoutAnchorable.CanDockAsTabbedDocument can be set to false to prevent the contextMenu from enabling the "Dock as Tabbed document" option.
But yes, a drag and drop is still possible. This will be fixed in v3.9.
A possible fix for this problem can be found in an extra branch:
https://github.com/Dirkster99/AvalonDock/tree/Issue18
I wonder if anyone has an opinion on this fix or whether I am missing something crucial? Would someone be up for a 4 eyes commit and independent testing?