List Web Part Expand/Collapse View Broken on Modern Site Page

tgjerdahl and hazza365, I just tested this out again and it is now working on a test page. With that said, it wasn't working when we needed it and the solution I came up with was a custom formatted list view based off the PnP Bulletin Board list view https://github.com/pnp/sp-dev-list-formatting/tree/master/view-samples/bulletin-board-format. 

Example of my custom list view:

My custom list view JSON:

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/view-formatting.schema.json",
  "hideListHeader": true,
  "hideSelection": true,
  "rowFormatter": {
    "elmType": "button",
    "customRowAction": {
      "action": "defaultClick"
    },
    "attributes": {
      "class": "ms-bgColor-white ms-bgColor-themeLight--hover"
    },
    "style": {
      "width": "100%",
      "margin": "5px 0",
      "padding": 0,
      "border": "none",
      "cursor": "pointer"
    },
    "children": [
      {
        "elmType": "div",
        "attributes": {
          "class": "ms-borderColor-themePrimary ms-bgColor-themePrimary"
        },
        "style": {
          "min-width": "auto",
          "display": "flex",
          "border-width": "3px",
          "border-style": "solid",
          "box-sizing": "border-box",
          "align-items": "center"
        },
        "children": [
          {
            "elmType": "div",
            "attributes": {
              "iconName": "Unknown",
              "class": "ms-fontSize-su ms-fontWeight-regular  ms-fontColor-white",
              "title": "Question"
            },
            "style": {
              "flex": "none",
              "padding": "6px",
              "padding-left": "10px",
              "height": "42px"
            }
          }
        ]
      },
      {
        "elmType": "div",
        "attributes": {
          "class": "ms-fontColor-themePrimary ms-borderColor-themePrimary ms-fontWeight-semibold ms-fontSize-l"
        },
        "style": {
          "border-width": "3px",
          "border-style": "solid",
          "box-sizing": "border-box",
          "width": "100%",
          "text-align": "left",
          "padding": "15px 5px",
          "overflow": "hidden"
        },
        "children": [
          {
            "elmType": "div",
            "txtContent": "[$Title]",
            "style": {
              "height": "24px"
            },
            "attributes": {
              "title": "Click to view answer"
            }
          }
        ]
      }
    ]
  }
}