Updated 2026 Planner Issues

Hi, that sounds very frustrating, particularly the cursor moving into the wrong task and previous people being tagged automatically. I would first confirm whether these are Basic or Premium Planner plans because task conversations and notifications behave differently between the two. Premium task conversations can use Teams, whereas Basic plans use task comments. The typing and unexpected tagging behaviour does not sound normal in either case. Please test the same plan directly in Planner on the web, then in Teams, and also in an InPrivate browser window with extensions disabled. That should show whether the problem is plan-side or client-side. I would also check Microsoft 365 Service Health and record a short screen capture with the plan type, browser or Teams version, exact time and affected task. That information will make a Microsoft support case much easier to escalate.