cornerRadius breaks bar chart when there is a interval select parameter

[Light2Dark]

Bug Description

{
    "data": {
        "values": [
            {"a": "A", "b": 28},
            {"a": "B", "b": 55},
            {"a": "C", "b": 43},
            {"a": "D", "b": 91},
            {"a": "E", "b": 81},
            {"a": "F", "b": 53},
            {"a": "G", "b": 19},
            {"a": "H", "b": 87},
            {"a": "I", "b": 52}
        ]
    },
    "mark": {
        "type": "bar",
        "cornerRadius": 1
    },
    "encoding": {
        "x": {
            "field": "a"
        },
        "y": {
            "field": "b",
            "type": "quantitative"
        },
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v6.1.0.json",
    "params": [
        {
            "name": "pan_zoom",
            "bind": "scales",
            "select": {
                "type": "interval"
            }
        }
    ]
}

When cornerRadius is 0, it renders correctly

If cornerRadius is 1 and select.type is "interval", the bars don't show up. The bars show up if select.type changes to "point"

Similar issue:
#6759

Checklist

• I checked for duplicate issues.

[domoritz]

It's probably because of some changes to the nesting in the Vega spec. Could you check how they compare?

[Light2Dark]

Checked the compiled vega spec, the marks section is the only diff I could see

corner radius 0

"marks": [
    {
      "name": "marks",
      "type": "rect",
      "clip": true,
      "style": ["bar"],
      "interactive": true,
      "from": {"data": "data_0"},
      "encode": {
        "update": {
          "cornerRadius": {"value": 0},
          "fill": {"value": "#4c78a8"},
          "ariaRoleDescription": {"value": "bar"},
          "description": {
            "signal": "\"a: \" + (isValid(datum[\"a\"]) ? isArray(datum[\"a\"]) ? join(datum[\"a\"], ' ') : datum[\"a\"] : \"\"+datum[\"a\"]) + \"; b: \" + (format(datum[\"b\"], \"\"))"
          },
          "x": {"scale": "x", "field": "a"},
          "width": {"signal": "max(0.25, bandwidth('x'))"},
          "y": {"scale": "y", "field": "b_end"},
          "y2": {"scale": "y", "field": "b_start"}
        }
      }
    }
  ],

corner radius 1

  "marks": [
    {
      "type": "group",
      "from": {
        "facet": {
          "data": "data_0",
          "name": "stack_group_main",
          "groupby": ["a"],
          "aggregate": {
            "fields": ["b_start", "b_start", "b_end", "b_end"],
            "ops": ["min", "max", "min", "max"]
          }
        }
      },
      "encode": {
        "update": {
          "x": {"scale": "x", "field": "a"},
          "width": {"signal": "max(0.25, bandwidth('x'))"},
          "y": {
            "signal": "min(scale('y',datum[\"min_b_start\"]),scale('y',datum[\"max_b_start\"]),scale('y',datum[\"min_b_end\"]),scale('y',datum[\"max_b_end\"]))"
          },
          "y2": {
            "signal": "max(scale('y',datum[\"min_b_start\"]),scale('y',datum[\"max_b_start\"]),scale('y',datum[\"min_b_end\"]),scale('y',datum[\"max_b_end\"]))"
          },
          "clip": {"value": true},
          "cornerRadius": {"value": 1}
        }
      },
      "marks": [
        {
          "type": "group",
          "encode": {
            "update": {
              "y": {"field": {"group": "y"}, "mult": -1},
              "width": {"field": {"group": "width"}}
            }
          },
          "marks": [
            {
              "name": "marks",
              "type": "rect",
              "clip": true,
              "style": ["bar"],
              "interactive": true,
              "from": {"data": "stack_group_main"},
              "encode": {
                "update": {
                  "fill": {"value": "#4c78a8"},
                  "ariaRoleDescription": {"value": "bar"},
                  "description": {
                    "signal": "\"a: \" + (isValid(datum[\"a\"]) ? isArray(datum[\"a\"]) ? join(datum[\"a\"], ' ') : datum[\"a\"] : \"\"+datum[\"a\"]) + \"; b: \" + (format(datum[\"b\"], \"\"))"
                  },
                  "width": {"field": {"group": "width"}},
                  "y": {"scale": "y", "field": "b_end"},
                  "y2": {"scale": "y", "field": "b_start"}
                }
              }
            }
          ]
        }
      ]
    }
  ],