Steps to recreate:

  1. File->New
  2. Etc->Clear Quest Filepath and click "Yes" (bug still happens even if you skip this step)
  3. Etc->Options->Settings->Auto-save Interval: 1 Minute
  4. Wait 1 minute
  5. Observe Saving Quest msgbox briefly appears
  6. Observe "Untitled Quest" still appears in ZC Editor title bar


It appears to have not actually saved, because shouldn't the editor pick a filename?