We have a case when document panel becomes hidden outside of the window.
Please, check the attached video for more details:
AvalonDock_fixedAnchorablePanelBehavior.zip

1. Add additional tools panel FileStats2.
2. Dock tools panel FileStats to left side and FileStats2 to the right side.
3. Start decrease width of main window.
   As result: the document panel start to decreasing, after it reach DockMinValue, the tool panel in right FileStats2 start hiding under the window border.

Is there any way if we can make behavior of docked anchorable window in same way as in VisualStudio for example (see video).
Here in first order decrease Document Panel and then start to decreasing the tool panels.