cornerRadius breaks bar chart when there is a interval select parameter #9750

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1. Light2Dark

   added

   Bug 🐛

   on Jan 17, 2026
2. Light2Dark

   changed the title [-]cornerRadius breaks bar chart when there is a parameter with interval select parameter[/-] [+]cornerRadius breaks bar chart when there is a interval select parameter[/+] on Jan 17, 2026
3. domoritz commented on Jan 17, 2026

   

   domoritz

   on Jan 17, 2026

   Member

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   It's probably because of some changes to the nesting in the Vega spec. Could you check how they compare?
4. Light2Dark commented on Jan 19, 2026

   

   Light2Dark

   on Jan 19, 2026

   Last edited by Light2Dark

   Author

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   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"}
                   }
                 }
               }
             ]
           }
         ]
       }
     ],