Hy there,
I'm sorry for everyone but I somehow can't get the images to work properly (wanted them little and big ones if you click on them, just like frogboy does) - so I decided to go with the big ones
just losing time playing this game cause I see that it has the potential to become my absolute favorite game. I was just playing, when I decided to alt+tab, (it was not the first time I did this, there were some minor graphic issues however scrolling out to clothmap, and zooming in again solved them) but not this time.
I suspect, that the trees are to be blamed as it only happened with them around.
In addition it was a longer game session and alt+tabbing back to the desktop took at least a minute (compared to near instantly normally), I guess this was because data had to be swapped back in to my RAM. I suspect that eventually after alt+tabbing something went wrong when swapping back in.
now a couple of pictures:
after searching a place with not many trees around, when scrolling in, everything seems fine:

scrolling out a bit further we see some errors...

and more:

and even more:

going out to the cothmap, we see that trees are around:

and last but not least a funny screenshot from some other place.

