User blog comment:MisterWoodhouse/The Unified Community Platform Editor and our first release date/@comment-31558127-20200322014503/@comment-44807868-20200322052618

UCP is backed with an ambition to offer a better experience to users. I understand you're experiencing frustration with the new changes, but do note that it's just an open beta and Fandom staff are actively working on improving it as well as giving an ear to users' feedback.

I don't know if this blog is still being monitored by Fandom staff, but Thread:1823409 is. You can try giving your feedback there if you like. It'd also greatly help to explain what exactly is the problem that's hindering your editing experience with mobile desktop mode.

Also, custom CSS (and JS) aren't available on UCP yet, but of course, they'll be accessible at some point: "Many of you noticed that robust customization is not yet available on the Unified Community Platform. That is not a bug, that is intentional. Custom JS relies upon a content review system which is not yet ported from the legacy platform, so it will not be enabled until that happens. Having the simple customization options available now allows us to have a better baseline for chasing down core functionality bugs without issues being confounded by community customizations. Once we have the platform in a good place with core stability, we can let you get back to your usual creative ways :)"

- MisterWoodhouse