Issue description
Paint placed on the edge of Concrete Surfaces make the "curb" draw incorrectly. Visual bug.
Reproduction steps
Place the Concrete surface down, then try painting along one of the concrete surface edges where the curb is visualized. Curb should then look like something similar to the image below.
Needs tested also on other surface types along with all the paint markings.
Game version and build number
0.6.0b b317
Operating system
Windows