Dynamic Matrix: Condition Editor doesn't list questions located within a detail section

[JaneSjs]

In the following survey, a question within a detail form depends on the other question within the detail form.

{
 "pages": [
  {
   "name": "page1",
   "elements": [
    {
     "type": "matrixdropdown",
     "name": "question1",
     "columns": [
      {
       "name": "Column 1"
      },
      {
       "name": "Column 2"
      },
      {
       "name": "Column 3"
      }
     ],
     "detailElements": [
      {
       "type": "boolean",
       "name": "additionalInfo",
       "title": "Do you want to add more information?"
      },
      {
       "type": "text",
       "name": "question3",
       "visibleIf": "{row.additionalInfo} = true",
       "startWithNewLine": false,
       "title": "More info"
      }
     ],
     "detailPanelMode": "underRow",
     "choices": [
      1,
      2,
      3,
      4,
      5
     ],
     "rows": [
      "Row 1",
      "Row 2"
     ]
    }
   ]
  }
 ]
}

However, questions from the detail form are not available within the condition editor.