Has no one else had the scrolling bug here?
I couldn't reproduce it.
Regarding the text editor -
It would be great to add a separate scrollbar there (like the old one had), or at least pin the tools themselves. When you're typing a long text, you constantly have to scroll up to change the font or color.
In the old editor, Enter worked as a line break; in this one, it works as a paragraph break. Because of that, without manual code modifications, it's impossible to remove excessively large gaps between lines where you don't need them. And a double space accordingly leaves too much empty space between lines.
Perhaps it makes sense, as before, to move preview and text editing into a completely separate standalone window. So that new messages wouldn't load in the thread simultaneously with it, and there'd be no risk of losing all information in case of an accidental refresh.