I hasten to add that I normally don't play with this feature enabled, but... :)
I noticed that downed enemies still show up as red blips on the edges of the screen.
Not sure if this is 'as designed' but would be better if they turned white or off when eliminated.
Play through any mission with dead enemies in close proximity. Orientate yourself so that they are off-screen. You will see red blips on the edge of your screen suggesting there are still live enemies nearby, although they are referencing dead ones.
Unable to reproduce in the latest dev build. If this issue is still valid for you, please create a new ticket for it.