More of a suggestion than a bug, but "an object up to 2 tiles away" or "an object within 2 tiles" should be valid constructs, but for now both cause a problem because "within 2 tiles" is supposed to affect all object with this condition, so you can affect "enemy robots within 2 tiles" or "every object within 2 tiles" but cannot affect a single object.
More of a suggestion than a bug, but "an object up to 2 tiles away" or "an object within 2 tiles" should be valid constructs, but for now both cause a problem because "within 2 tiles" is supposed to affect all object with this condition, so you can affect "enemy robots within 2 tiles" or "every object within 2 tiles" but cannot affect a single object.