Restyle function breaks "scatter" traces at the "h" orientation

If you set the orientation: 'h' to restyle (or update) function, then the "scatter" traces somehow shift relative to each other.

Not reproduce for "bar" traces.

Excemple on codepen:

var x = [1, 2, 3, 4, 5],
    y = [0, 1, 2, 3, 4];

var traceCommon = {
    //type: 'bar',
    type: 'scatter',
    orientation: "h",
    stackgroup: "s",
    mode: 'lines+markers',
    x: x,
    y: y
};

var trace1 = {
    ...traceCommon,
    //y: [0, 1, 2, 3, 4],
    //x: [1, 5, 3, 7, 5]
};

var trace2 = {
    ...traceCommon,
    //y: [1, 2, 3, 4, 5],
    //x: [4, 0, 4, 6, 8],
};

Plotly.newPlot('myDiv', [trace1, trace2], { title: { text: "OK" } });

setTimeout(() => {

    Plotly.update('myDiv', {
        x: [x, x],
        y: [y, y],
        orientation: ["h", "h"]
    }, {
        title: { text: "ERROR" }
    }, [0, 1]);

}, 1500);

Reproduce the CodePen example using Plotly.update with two horizontal scatter traces and compare it with the commented bar-trace variant. Start at the Plotly.update/restyle entry points and trace how orientation and stackgroup are recalculated for scatter traces. Done means updating both traces no longer shifts them relative to each other while preserving the bar behavior.