So far, so good!
Would love the ability to insert custom CSS/JS (though you can, of course, via the text entry, hacky though that is). But the only actual glitch there is is with what appears to be Jetpack's 'insert contact form' module. That bleeds over into the text field and obscures what text you enter. (May be as simple as giving the textarea a background color?)
But, as I say, very good.