What did you do?
Start a new game. Open Factoriopedia. Click on the Enemy Tab. Click on one of the Demolisher entities. It doesn't matter which one since they are all equally affected.What happened? What did you expect to happen instead? It might be obvious to you, but do it anyway!
The Demolisher page doesn't contain the body segment info found on the official Factorio Wiki Enemy page.Does it happen always, once, or sometimes?
It has always happened ever since Space Age Expansion was released.Reproduction Steps
Start Factorio client with Space Age Installed and enabled.Click on Singleplayer.
Click on New Game.
Click Next for Freeplay (Space Age).
Click on Play or press E.
Click on Factoriopedia button under the minimap. Or press ALT + Click on any item.
Click on the Enemy Tab.
Click on one of the three Demolisher Entities.
In-game screenshot:
Factorio Wiki:
Source: https://wiki.factorio.com/Enemies

