Sidebar nav missing from some pages

This one seems like it ought to have the FWF nav:

https://developer.fermyon.com/wasm-functions/changelog

This one is arguably fine since its a shared reference but still a tiny bit jarring; could maybe use some icon (🔗?) to indicate that it's going somewhere kinda-sorta "external"? 🤷 

https://developer.fermyon.com/wasm-languages/webassembly-language-support
