Following the advice in an answer to my last question, I added a deck.DataFilterExtension to my deck.gl GeoJSON-layer to be able to filter some polygons. The following is the core of my setup; I hope I'm not leaving out any important details by shortening it.

<script>
let highlightedMap = null;

render();

function render() {
    layers = [new deck.GeoJsonLayer({
            id: 'polygon-layer',
            data: family,
            pickable: true,
            getPosition: d => d.geometry.coordinates,
            filled: true,
            getFillColor: d => (visibility(d) ? hexToIntColor(d.properties.color) : [0, 0, 0, 0]),
            lineWidthUnits: "pixels",
            getLineWidth: highlighted,
            getLineColor: highlightedColor,
            lineWidthMinPixels: 1,
            visible: true,
            onClick: displayProperties,
            updateTriggers: {
                getLineWidth: [highlightedMap],
                getLineColor: [highlightedMap],
                getFillColor: [highlightedMap],
                getFilterValue: [highlightedMap]
            },
            getFilterValue: visibility,
            filterRange: [1, 2],
            filterEnabled: false,
            extensions: [new deck.DataFilterExtension({filterSize: 1})]
        })];
    deckgl.setProps({layers});
}

</script>

    <!-- Libraries in the end for faster page loading-->
    <script src="https://unpkg.com/deck.gl/dist/dist.dev.js"></script>
    <script src="https://unpkg.com/@deck.gl/carto/dist/dist.dev.js"></script>
    <script src='https://unpkg.com/@turf/turf@6/turf.min.js'></script>
    <link href="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.css" rel="stylesheet" />
    <script src="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.js"></script>

Initially, visibility returns 0 and nothing is rendered despite the filterEnabled: false, but after a user interaction, it returns 1 or 2 for some polygons so things should definitely appear, but instead, I see on the console

Error: update of PathLayer({id: 'polygon-layer-polygons-stroke'}): Model needs a program
    assert https://unpkg.com/deck.gl/dist/dist.dev.js:45267
    _checkProgram https://unpkg.com/deck.gl/dist/dist.dev.js:27146
    initialize https://unpkg.com/deck.gl/dist/dist.dev.js:26814
    Model https://unpkg.com/deck.gl/dist/dist.dev.js:26774
    _getModel https://unpkg.com/deck.gl/dist/dist.dev.js:105017
    [...]

both for the polygon fill and for the polygon strokes. I cannot make head or tails of this, especially because to my JavaScript-untrained eyes, program actually appears to be a WebGLProgram.

Things are fine, everything shows up nicely, without the filter-specific lines

            getFilterValue: [highlightedMap]
        },
        getFilterValue: visibility,
        filterRange: [1, 2],
        filterEnabled: false,
        extensions: [new deck.DataFilterExtension({filterSize: 1})]

What could be going wrong here?