Lookup Column content disappears with conditional formatting

Hi eis33  , 

I am not sure what happened, but I can see that even when the lookup field is set to a single value, it is treated as multi-valued in the formatting.

I edited your code, and it is now working in my case.

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "debugMode": true,
  "elmType": "div",
  "style": {
    "box-sizing": "border-box",
    "padding": "0 2px",
    "overflow": "hidden",
    "text-overflow": "ellipsis"
  },
  "attributes": {
    "class": "sp-field-borderRightBold sp-field-borderRightSolid sp-field-fontSizeMedium"
  },
  "children": [
    {
      "forEach": "itemIterator in @currentField",
      "elmType": "div",
      "txtContent": "[$itemIterator.lookupValue]",
      "style": {
        "padding-bottom": "1px"
      }
    }
  ]
}