I created a text box and set a few styles; bold, italic, colour, and underline and everything displays somewhat as expected (the double-underline is a single underline) in the editor, but when previewed in Safari all of the text is double-underlined.
Also, I’m finding the show/hide inspector button which is currently beside the browser preview button really unintuitive as I keep looking for it in the ‘status bar’ at the bottom right, beside the viewport width (scale%). Please consider moving the show/hide inspector to the bottom toolbar, closer to where it actually impacts the UI.