[
  {
    "run": 1,
    "cause": "Isolated Workbench world supplies no mission header; fixture null dereference before widget check."
  },
  {
    "run": 2,
    "cause": "Fixture header provider was declared in a later modded class; corrected to standalone fixture boundary."
  },
  {
    "run": 3,
    "cause": "Native loading layout needs its component attached explicitly by the loading animation; fixture now uses that attachment."
  }
]