I did not know about Support > Bug Reports > Minor issues. Can I somehow move this over there?

Most entities have a shadow facing at a 90 degree angle to the right. The only exception that I know of, and it confuses me every time I notice it, is the wall. The wall has a shadow facing at a 45 degree to the bottom right. See, for example, some pictures from the wiki,

https://wiki.factorio.com ...