Take into account grids that may be half offset

objects/Grid.cs

@@ -88,7 +88,7 @@ public partial class Grid : Area3D
 		pos += halfSize[(int)axis] * normal;
 
 		// Snap the position to the grid.
-		var halfOff = basis * halfSize.PosMod(1.0f);
+		var halfOff = (basis * halfSize + _halfGridActualSize).PosMod(1.0f);
 		pos = halfOff + (pos - halfOff).Snapped(StepSize);
 
 		return new(GlobalBasis * basis, GlobalTransform * pos);