icon_size = 52
map_format = ISOMETRIC_MAP
ICON_WIDTH = 52
ICON_HEIGHT = 52
VIEW_WIDTH = 16
VIEW_HEIGHT = 1
when USE_HEALTH_METER is enabled for an example, the display is then changed and the map does not fill the screen anymore and a big thick black border can be seen.
at the hud-meter.dm file, the following code is one example that changes the map settings...
HealthMeter
parent_type = /HudMeter
New(mob/m)
..(m, "health", "max_health")
to reproduce the display bug, use my map settings and disable all hud elements. next: enable the healthbar. the map display is then resized. pressing the spacebar in game also changes the isometric view settings when the inventory is show on screen.
That will make the health meter appear in the bottom left corner of the screen.