unfocusedAppearance cursorShape doesn't work

Windows Terminal version (or Windows build number)

1.8.1444.0

Other Software

No response

Steps to reproduce

settings.json:

{
    ...
    "profiles":
    {
        "defaults":
        {
            ...
            "cursorShape": "filledBox",
            "unfocusedAppearance": {
                "cursorShape": "emptyBox"
            }
        },
        ...
    },
    ...
}

Open Windows Terminal and some other application (e.g. Explorer) and move to that application so that Windows Terminal is unfocused.

Expected Behavior

Cursor changes to empty box.

Actual Behavior

Cursor disappears which makes the setting useless.