A strange bug in Windows 11 KB5067036 causes the Task Manager instance to duplicate every time it is closed, potentially hurting PC performance.
KB5067036 (Build 26200.7019 or 26100.7019) was released on October 28 as an optional update, featuring a new Start menu, colorful battery icons, and a Recommended feed in File Explorer.
Windows 11 KB5067036 allows Windows to finally shut down when you use Update & Shut Down in the Start menu's power options.
Author's summary: Windows 11 update causes Task Manager duplication issue.