I'm working on making a couple of scenarios and have gotten to the point where I'm just about to call one scenario done, but I keep running into the (admittedly small) issue of how the wall textures align.

In the stock maps, the hatching of the wall texture is neatly aligned like so:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1226173656

However, on my own maps, the hatching ends up rotating to the wall's angle:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1226173984

My wall placement looks like this:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1226179892

Is this a limitation of the editor?
How do I get the hatching to align properly?