PowerShell script settings are ineffective after you delete VBScript logon or logoff settings from the Script tab

Assume that you have VBScript scripts and Windows PowerShell scripts configured in a Group Policy logon or logoff script. You edit this Group Policy Object (GPO) by opening the properties dialog box for the logon or logoff script, deleting all VBScript settings from the Script tab, and then clicking OK or Apply followed by OK. After that, you notice that the PowerShell scripts are ineffective, even if you did not delete any settings from the PowerShell Scripts tab.