I get blue/grey trees and fences in the game in specific areas, how to fix this?
I already disabled vertex shading, but that didn`t do nothing!!!

Yeah, it's really weird - even with turning the Vertex Shaders off and Borderless Windowed mode, it seems the fences, trees, and some random objects bug out when playing the game on DX8 and DX9 modes...

Maybe it has something to do with Intel Integrated Graphics chips? Either way, it's a little disappointing to start playing the game again to find that many awesome, good tweaks have been made to the game over the years, but somehow this weird visual glitch is still around.