2 types of Spirit Workers in Map Editor are indistinguishable

There are 2 types of Spirit Workers in the game: 1) the kind you get from Spirit Worker potions, which have a finite lifespan; 2) the kind you get from Artefacts, which are permanent. Both of these types can be placed in the map editor, but they both use the same icon and tooltips so there's zero way of telling which is which while actually editing the map.