Thanks dpoulton. I tried all suggestions and your last worked!.

  • Below is the data in my window-state-prod.json file.

{"width":1360,"height":750,"x":176,"y":80,"displayBounds":{"x":0,"y":0,"width":1670,"height":940},"isMaximized":false,"isFullScreen":true}

  • I changed it to your recommended parameters.
  • Now there is the minimise, maximise option in top right corner of screen.
    Many thanks for your help. I can get back to enjoying this great program.