Data property-based circle-color steps ignored in iOS

[mirkokiefer]

Platform: iOS
Mapbox SDK version: v3.3.7

Steps to trigger behavior

Rendering a circle with circle-color depending on a data property:

{
    "circle-color": {
        "property": "value",
        "stops": [
            [
                0,
                "#ffffff"
            ],
            [
                100,
                "#ff0000"
            ]
        ]
    },
    "circle-opacity": 0.02,
    "circle-radius": 50
}

The rendering works correctly with the js SDK but the color steps are ignored on iOS.

Web screenshot:

native iOS screenshot:

[1ec5]

Property functions are not yet supported in the iOS SDK. This feature is scheduled for the upcoming v3.5.0 release. Please see #4860 for current progress.