Are you running multiple monitors ? Did you at one point ?
Command Wizard (and the Tag Browser) are notorious for remembering an Open position that's off the visible screen when you switch from multimonitor to single monitor.
You can reset its launch position with a registry edit by deleting its Folder from the registry.
Start > Run > Regedit >HKEY_CURRENT_USER\Software\Rockwell Software\RSViewSE\Application name\CommandWiz.
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