Mist effects can spam and build up.

[WJohn]

http://i.imgur.com/p3g3L96.png

Looks ugly, someone take a look at why things like blood don't stack and apply it here.

[WJohn]

Oh and for whoever wants to fix this, could you look into applying the same non-stacking code to alien blood and (if it's not already fixed) oil streaks?

[Niknakflak]

Please, never fix this. This is one of my favorite bugs.

[ike709]

This is a feature.