Cannot Read properties of undefined (reading 'marktype')

[NfNitLoop]

Bug Description

Using binning with maxbins + extent not possible with facets. (Though you can use either independently.)

Reproduction

Using a slightly modified version of an example from the Vega-Lite docs, I want to set maxbins within the viewed extent. But setting that when using facets results in the error:

Caution

[Error] Cannot read properties of undefined (reading 'marktype')

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "data": {"url": "data/cars.json"},
  "facet": {"row": {"field": "Origin"}},
  "spec": {
    "mark": "bar",
    "encoding": {
      "x": {
        "bin": {
          "maxbins": 5, 
          // UNCOMMENT this line to see the error:
          // "extent": {"param": "zoom"}
          },
        "field": "Horsepower",
        "type": "quantitative"
      },
      "y": {"aggregate": "count", "type": "quantitative"}
    },
    "params": [
      {
        "name": "zoom",
        "select": "interval",
        "bind": "scales",
      }
    ]
  }
}

editor

This works just fine without facets.

Checklist

• I checked for duplicate issues.

[domoritz]

maxbins works with extent: Open the Chart in the Vega Editor. The error seems to be specific to params.