In this scenario, we have a RadDocking control with a RadPane whose content is a RadGridView. Each time the RadGridView is replaced with a new instance and the docking layout is subsequently saved and reloaded (RadDocking.SaveLayout/LoadLayout), the previous RadGridView instance is expected to become eligible for garbage collection once no other reference to it remains. Instead, it is not collected by the GC. 

The bug happens when we have two or more rows merged in the first column and programmatically, we make the rowDetails for the first row visible, the merged cells of the first column stay merged and are over of the rowDetails, hiding a part of the Row Details: