Graphical Glitch in Twisted Treeline

Awhile ago I noticed some very prominent seams near the spider nest at the top of Twisted Treelines (the red-outlined area). The one on the right entrance is almost unnoticeable, but the one on the left entrance is almost impossible to miss (if you take the time to look at the artwork).

As for the blue outline, there isn't anything there. This could rather be that the UV's are missing or that the normals are flipped most likely.

I only just now bring it up because I didn't know if it was already being worked on or something, but it's been quite a few patches and I couldn't find any posts about it anywhere.