Overcoming 100% elemental resistance

[Tuidjy]

archaeolept said:well, i did see my bunch of storm demons trying to take down a 100% lightning immune SC

Now, I am not saying that troops will not attack enemies that they cannot
damage, but in the example, above, this is not the case. Storm demons'
first attack has a physical component, and, theoretically, can hurt anyone.

I have never seen mages cast spells against enemies immune to the attack
type, and I have seen troops stand still because there was nothing they
could damage.

The original post describes something that looks like a bug.