I do not see this problem on my machine with your sample project. Everything seems to be in order.
1) Make sure that there is no white line in the actual image.
2) Make sure that resolution options are not a problem.
3) I am not 100% sure, but in skybox the same thing happens with BLACK lines. Try and change the texture texture mode to Clamp, if possible. This may solve the problem.
Hope this helps, -Smileynator
source
share