'Hidden Whispers' theme here on Meta?

[Moin]

Looks like the theme component to hide that theme wasn’t added to Horizon.

Sidebar Theme Toggle

That’s a theme that the staff uses in cases where they may be taking a screenshot of Meta or something similar and don’t want whispers to be included. We have a separate theme component meant to hide it from the themes list for normal non-staff accounts, but it wasn’t added everywhere. I think it should be fixed now, it shouldn’t appear in the list for you while using any theme. Apologies for the confusion!