Leakage/screen door/corner bleed/inconsistant black and other terms is endemic to LCD display tech. All monitors are suseptable. I consider it a defect and poor QC beause the reason I've heard for it is panel is misaliged to the back light and it's a matter of micrometers percision. So yes, the defective ones have it. FWIW - If I spent $1000 on a monitor I would'nt stop the RMA process until a perfect one came.