Did anyone see the following problem with the latest revision?
Consider the followign xaml:
<ad:DockableContent x:Name="UpperContent" Title="Upper Content"/>
<ad:DockableContent x:Name="LowerContent" Title="Lower Content"/>
When run against previous versions everything displays and works correctly. The window displays the upper content and the lower content on the left, and one above each other, with the document pane on the right.
When built against 45675 I get an exception during the ArrangeOverride of the DockingManager when the window is initialized. The exception is thrown by UpdateAnchorStyle(ResizingPanel panel) "The enumerator is not valid because the collection changed."
This happens on the foreach the second time around.
If I change that with a for loop instead, the window initializes but the "UpperContent" DockableContent is never shown and is not even part of the DockableContents collection of the DockingManager.
Am I doing somethign wrong?