Hm, looking into it, it looks like there's something in the wiki's JS that's causing issues. I'm not sure what tho, the only thing I can see that might affect it is the search suggestions script, but that only runs on Special:Search. There's also issues with your Common.js (bare wg vars instead of using mw.config.get), so maybe it's worth seeing if fixing those issues fixes the issue with OasisRevived somehow?