Fugitive, it's not just a cosmetic change. There are damage model bugs being reported here.
Damage model's outta whack, regardless of where the graphical "gas leak" originates.
I'd also like to add to the bugs an oversight that I think borders on bug. The wrong wing tank drains first on auto-fuel select. The plane is somewhat unstable, and leaving the auto fuel select on burns the wing tank that makes it even MORE unstable. Torque on this plane is opposite that of other planes, which dictates draining the OTHER wing's tank first.
Would like to see that fixed. IMO it explains some of the unruly behavior this plane exhibits.