Board Thread:General Discussion/@comment-35970131-20200614180838/@comment-9605025-20200618032809

The reason Forum and the like are incompatible with UCP is because of the major version jump. The legacy platform is a custom version of MediaWiki 1.19 while UCP is fresh-out-of-the-box MediaWiki 1.33. So the incompatibility of custom features is no surprise. The real issue (supposedly) is that the custom features are, relatively speaking, clumsily written and poorly documented. So the current dev team would have to spend a lot of time just figuring out what does what. Additionally, Forum is not mobile-friendly. Fandom has an overall initiative to become more mobile-friendly since "most traffic" is from mobile devices and Google considers mostly (if not exclusively) mobile pages when ranking websites. Well, at least, that is what we have been told.