A strange bug in Windows 11 KB5067036 causes the Task Manager instance to duplicate every time it is closed, potentially hurting PC performance.
Microsoft has not yet acknowledged the reports, but tests show that 30% of 100 virtual machines have encountered this issue.
KB5067036 (Build 26200.7019 or 26100.7019) may cause performance issues if Task Manager is opened multiple times a day.
Author's summary: Windows 11 KB5067036 has a Task Manager bug.