Hey all, very new to Source mapping so apologies if this is like a well known thing and it's actually incredibly easy to fix. Tried searching here and on google and it doesn't seem like anyone else has a fix for this.
Wanted to make a city map for GMod but when I copy-paste brushes the new copy has a checkerboard slightly overlaid on top of it. This doesn't show up in-game and doesn't seem to have any effect in-editor either but it is bugging me so, does anyone know why this happens?
https://imgur.com/a/lPoN6Dz (on the road's edge on the right and the street on the left)