Available in LIB version: 2014.3.1312
The top border of the control is missing when the TabStripPlacement is set to Left Will be available in R2 2016 Release.
The tab strip is misplaced when the TabStripPlacement property is set to Left Fixed in Q3 2014
The DropDownMenu is incorrectly positioned when the default TabStripPlacement is changed - if the TabStripPlacement is set to Bottom/Left/Right, the DropDownMenuis displayed at the top left corner of the screen.
RadTabControl with ContentPresenter replaced by RadTransitionControl brakes design time in VisualStudio 2010