Article editor UI updates not user friendly and slowed down actions

Over the last few days/weeks there have been a number of updates to the article editor UI that I've been trying to get used to, but they seem to keep coming and slow me down:

• When I save or publish an article, it takes ages for the process to be completed. In general, the article editor is slower than it used to be.
• The translations have been moved to the right. That's not a problem, and I like the new view. However, if I want to add a translation for a language, I can no longer simply select the language from the drop-down list, which previously listed all the languages added to the Help Center, but now I have to search for the language. With up to 21 languages per Help Center, I lose track of which translations I need to add.
• The list of languages is not sorted logically, it should be sorted alphabetically. Currently I cannot find a language without scrolling up and down the list until I see it somewhere in the list.
• I understand that the editing tools have been moved to the header to provide more writing space and less clutter. But it's still not a good position, because you always have to move the mouse from the text to the top left to select a tool. It would be better not to have a fixed toolbar and let the user decide where to place it.

I would like to see an option to revert to the old UI until you've got the final design sorted. It's also not good practice for us daily users to have a change every few days that we have to adapt to.

I know you are not done with all the changes yet, so I hope the current design will change for the better.