Hi,

I'm having an issue with LayoutDocument inside LayoutDocumentPane. When I add multiple LayoutDocuments inside the DocumentPane and if content of that LayoutDocuments has many UIElements (for example, tens of thousands of elements) switching between them is extremely slow - it seems that when clicked/switched to, LayoutDocument recalculates something with it's child controls, including Canvas. Switching is super fast if hosted controls inside LayoutDocument are simple, with normal number of child items.

Also, docking from floating position back to "pinned" state also sometimes takes long time, same like switching between documents like above.

Any way to bypass this behavior? Users will have 10-15 documents open like that in "tabs" so switching between them should be fast.