The maps for the cubes don't seem to be working quite right. Particularly the right and left faces have an area where they overlap which I've highlighted in some photos below, they also aren't aligned at the center either (latest steam version and the resolution of the texture is 512x512) It's been really hard to make consistent textures with this so hopefully this issue is resolved . (btw the map I used is watermarked but it's the only one i've found that doesn't have anti-aliasing)

edit: closing this because mariavirgine made a better post addressing this in the suggestions forum