Grafana reproduce bug for #28897

model.json

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 1,
  "iteration": 1605623383959,
  "links": [],
  "panels": [
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": null,
      "fieldConfig": {
        "defaults": {
          "custom": {}
        },
        "overrides": []
      },
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 0,
        "y": 0
      },
      "hiddenSeries": false,
      "id": 2,
      "legend": {
        "avg": false,
        "current": false,
        "max": false,
        "min": false,
        "show": true,
        "total": false,
        "values": false
      },
      "lines": true,
      "linewidth": 1,
      "nullPointMode": "null",
      "options": {
        "alertThreshold": true
      },
      "percentage": false,
      "pluginVersion": "7.3.1",
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "test_gauge{component=\"$component\", service=\"$service\"}",
          "interval": "",
          "legendFormat": "{{component}}-{{service}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Test Gauge",
      "tooltip": {
        "shared": true,
        "sort": 0,
        "value_type": "individual"
      },
      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        },
        {
          "format": "short",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
        }
      ],
      "yaxis": {
        "align": false,
        "alignLevel": null
      }
    }
  ],
  "schemaVersion": 26,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "allValue": null,
        "current": {
          "selected": true,
          "text": "component2",
          "value": "component2"
        },
        "datasource": "Prometheus",
        "definition": "test_gauge",
        "error": null,
        "hide": 0,
        "includeAll": false,
        "label": null,
        "multi": false,
        "name": "component",
        "options": [
          {
            "selected": false,
            "text": "component0",
            "value": "component0"
          },
          {
            "selected": false,
            "text": "component1",
            "value": "component1"
          },
          {
            "selected": true,
            "text": "component2",
            "value": "component2"
          }
        ],
        "query": "test_gauge",
        "refresh": 0,
        "regex": "/component=\"([^:\"]*)/",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {
          "selected": true,
          "tags": [],
          "text": [
            "All"
          ],
          "value": [
            "$__all"
          ]
        },
        "datasource": "Prometheus",
        "definition": "test_gauge{component=\"$component\"}",
        "error": null,
        "hide": 0,
        "includeAll": true,
        "label": null,
        "multi": true,
        "name": "service",
        "options": [
          {
            "selected": true,
            "text": "All",
            "value": "$__all"
          },
          {
            "selected": false,
            "text": "service4",
            "value": "service4"
          },
          {
            "selected": false,
            "text": "service5",
            "value": "service5"
          },
          {
            "selected": false,
            "text": "service6",
            "value": "service6"
          }
        ],
        "query": "test_gauge{component=\"$component\"}",
        "refresh": 0,
        "regex": "/service=\"([^:\"]*)/",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "",
  "title": "Test Dashboard",
  "uid": "WTewptTGk",
  "version": 6
}