Conditional Formatting - createDataViewWildcardSelector with Grouped Data

For any that come across this thread in the future, the solution that I found was to use a different kind of 'Wildcard' selector.

I found that the visuals API defined different types of data repetition selectors, specifically a role wildcard

So where the original implementation was:

    fontSize = new formattingSettings.NumUpDown({
        name: "fontSize",
        displayName: "Text Size",
        value: 12,
        selector: dataViewWildcard.createDataViewWildcardSelector(dataViewWildcard.DataViewWildcardMatchingOption.InstancesAndTotals),
        instanceKind: powerbi.VisualEnumerationInstanceKinds.ConstantOrRule
    });

I followed the definition for creating the dataview wildcard selector and replaced the selector definition with:

    fontSize = new formattingSettings.NumUpDown({
        name: "fontSize",
        displayName: "Text Size",
        value: 12,
        selector: { data: [{ roles: ["category"] }] },
        instanceKind: powerbi.VisualEnumerationInstanceKinds.ConstantOrRule
    });

With this change, the conditional formatting objects were then bound to 'categories' as before, even when a grouping series is used