- sorry guys, I've been on vacation :)
We're unsure if the first one was an oversight or design choice, and so the icon was likely a 'fix'. The Subetapedia one was quite busy and as often happens in busier illustrations they were just left off, I imagine. Whiskers are one of those things that can be included or not in most illustrations if they aren't an important design feature (with photos of animals, they'll be visible in some and not others and so can disappear and reappear in certain illustrations).
Goth's revamp defined them as a character design choice/important design feature, and so the icon/Subetapedia will be updated to match :)