When DragDropMode is set to Deferred and the layout is changed and saved some Panes are rendered incorrectly.
When DragDropMode is set to Deferred and Pane are moved around in the Docking control if the layout is saved and loaded some Panes are rendered incorrectly.
Available in LIB version 2016.2.516, it will be also available in the R2 2016 SP1 Release.