Minor nit: right-clicking the Settings process shows the project name (Microsoft.PowerToys.Settings.UI.Runner) instead of just 'PowerToys Settings'.

related: clicking on that option opens a second window with error:

That title is also what appears in Task Manager.
Thanks @royvou!!!
shouldn't it also be single instance to prevent a second forbidden window?
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shouldn't it also be single instance to prevent a second forbidden window?