For years I said that plakoto had a bug and was told there was "not a bug!"
Nobody told me to switch the setting.

It seems that the small board does display the game so you know which piece is covered and which is doing the the covering. Small board does look really ugly btw. Large board still has the same bug of hiding the pieces and not showing which piece is covered and by how many (unless fixed while my post was written)! Only trial and error or playing through the game history would tell you what is going on!
Why the big board doesn't function as the small board is annoying I wasted a lot of time using trial and error to work out what going on!