When entering the options menu the map screen goes away and the option menu is the only UI visible. It hides the bottom six creatures when in the castle.
The options menu is the only time that the map or bottom six creatures are hidden when traversing non-fullscreen menus.
This could be improved by only hiding the map or creatures when adjusting the zoom level since that is the point when the map gets in the way.
Although the “default” option in the menu would result in the map being in the way if the zoom level was changed.