Added Additional Placements version 1.2.5-1.21.1 to All the mods 10 running Neoforge 21.1.131
blocks placed with Additional placement logic on in configurations that would appear in vanilla works but any config that is added by the mod causes a missing texture as shown in image above.

I'm not sure what causes it but I've heard sometimes reloading resourcepacks (ctrl+r in-game) can fix it. It's probably a mod messing with the way block and item textures are loaded in some manner.

running /reload fixed it for some reason, 🤷 If you need any more info im here otherwise it seems safe to mark closed