Strange visual bug

[killing time]

The aliens' base, at the favored location on the map orion, was suddenly covered with a huge green tarp:

The attachment unvanquished_2012-07-25_222111_000.jpg is no longer available

[Falcon]

Looks like an acid tube bug to me. How long was it there for? :D

[Ishq]

Yeah, same. It has been fixed.

[killing time]

It lasted 10 or 15 seconds I think. Also could have been acid effect from a building explosion; I think I threw a nade in there which exploded some stuff just before this.
Is this the same effect as when the mara zap lights up the whole room?

[Ishq]

No. That is a different effect. Mara zap has been fixed too.