Thread:EJS1/@comment-32769624-20210123155515/@comment-44807868-20210124151317

The TabView help page explains it: "Under Fandom's UCP platform, use of TabView will be limited as Fandom intends to discontinue the extension. It is strongly suggested that your wiki does not add additional TabView code."

Your wiki is on UCP, and hence the TabView doesn't work there. The other wiki is also on UCP. However, certain UCP wikis have TabView temporarily re-enabled so that they can have time to switch to the TabView alternatives, so I assume that wiki to be one of them.

An alternative to TabView is tabber, but it isn't a recommended practice either. It's recommendable to either add links that look like tabs on the pages or add the links in the infobox navigation. 🙂