
I like the modern command bar's contextual buttons and layout. I have, however, found myself accidentally saving the app several times because of the positioning of the Publish icon just above the Expand formula bar icon:
The Expand formula bar icon is used a lot in editing apps and I find it's too easy to click a few pixels away and save the app.
The other aspect of the new layout I don't like, is that the Save icon defaults to saving without any version notes, which is not good practice when maintaining an app. It would be good to have saving with version notes the default save action, as it was with the older command bar Save icon, when you could still choose to leave the notes blank.