Dock section:
This System setting must be set to No Action. If WindowMizer is not working properly, please confirm that this setting is properly configured.
If this setting is not properly configured, the System will respond to a double-click in the title bar and Minimize or Zoom the window before WindowMizer gets a chance to respond and create a placeholder window.
Desktop & Stage Manager:
When using the WindowMizer Desktop Icon Hider feature, configure Stage Manager settings as follows:
Mission Control: