Incorrect editing of list-type metadata

  • do Project / Project Settings
  • select Custom Metadata
  • select a list-type Metadata field (say, “Day”)
  • select one of the items (called, say, “Weds”)
  • edit it to, say “Weds1”
    All items whose Day value was Weds are changed to blank
    and the last item on the Day list is changed to Weds1