Probably because you've called the verb RunAs (I'm guessing that's a hack to make Explorer run it elevated?)
You can edit the Opus context menu via Settings > Customize Toolbars > Context Menus > Lister Context. (In that, you'll see a placeholder item which inserts the registry values you're looking at, or most of them at least...)
The Opus command for opening PowerShell elevated can be found in the default Tools menu, and is:
CLI DOSPROMPT=admin,powershell
If you add that to the Lister Context menu it should do what you want.
Related threads about using "runas" as a kludge to elevate things in Explorer, vs Opus (where we have @admin and other ways to elevate things properly, without messing up standard verbs):