Closed Issue: [AvalonDock 2.0] - Navigation icons no longer appear over a LayoutDocumentPane after last LayoutDocument has been dragged into a floating window [15745]

To reproduce the problem:

1. Start MVVMTestApp using latest AvalonDock source code
2. Create a new document using the "New" menu command
3. Drag the document from the pane into a floating window
4. Attempt to drag the floating window back into the pane -> not possible because the navigation icons no longer appear

Maybe it has something to do with the new ILayoutUpdateStrategy methods for LayoutDocuments?
Comments:

fixed