Solo Home, failed to refill ammo several times.
However, i'm not entirely sure if it really was the bug, or i'm just haven't noticed that i entered this door before.
there should be no background color for the hud, the original arcade game had the hud on screen in the foreground, it would look a lot better like that
However, considering the hardware limitations, there's no real way to get rid of that, so keeping it black is the best available option.