Adding "firefox:pass" makes query stop finding results

[gsnedders]

Having started looking with the query enumeratedevices, I tried changing the query to find things that Firefox passes, which would normally be achieved with the query enumeratedevices firefox:pass.

However, this surprisingly returns no results, despite the fact that obviously there are tests that Firefox passes in the first query.

The structured query goes from:

    {
        "exists": [
            {
                "pattern": "enumeratedevices"
            }
        ]
    }

To:

    {
        "exists": [
            {
                "pattern": "enumeratedevices"
            },
            {
                "product": "firefox",
                "status": "PASS"
            }
        ]
    }

This might just be a duplicate of #2898?