Basically, if you use "Eyes of the Mind" it shows you the whole map with "you sense the presence of x monsters" and the positions of all said monsters on map.

Except, if you're in the graphical version, you can't look around the map when it happens. (because the message buffer is full?) So you can't actually see those monsters. At best, you can only see them on the minimap.

My suggested fix:

Make the minimap go fullscreen when a player uses Eyes of the Mind. (i.e, switch to ASCII mode) If the player is already in ASCII mode, obviously do nothing. Then switch back when the player clears message buffer.