In EDGE PANEL > TASKS unable to edit or Add task. App Getting closed.WORST SAMSUNG CUSTOMER CARE THEY ARE NOT UNDERSTANDING THE PROBLEM Even with Video Attached

After update UI 8.5 many settings Missing.1. Lock Handle position Missing. Can't move on Home screen2. In Power saving(Limit apps and Home screen Missing)3. Going back key issue . When it comes to app screen it won't go back, some app will get open...