Collection results missing fields

[wiserweb]

I have 15 fields in the collection Prices.

For the columns I use a render function

render: function (val, type, doc, meta) {
        // render documentation
        // https://datatables.net/reference/option/columns.render
        return renderTicker(val, doc);
    }

When I console.log('render doc:' + JSON.stringify(doc)) there are only 9 fields in the doc parameter.

Using the ephemer:reactive-datatables component all 15 fields from the Prices collection are shown in the console.log('render doc:' + JSON.stringify(doc).

What could possibly be causing this strange behaviour?