3 small points
Actually 3 small things. NONE of these is any big deal whatsoever but I would like to just mention:
(1) In Ebook editor, Tools - Beautify All files used to give an OK prompt at the end but since 2 or 3 versions no longer does, it finishes silently. I much preferred the previous method since sometimes the process is quite long.
(2) The new Book Editor icon is very nice, but in the taskbar (windows 10) I still see the old icon (or do I need to delete iconcache or whatever?)
(3) Tools - Remove unused css rules has an option "remove unused class attributes". But in fact, "remove unused class attributes" is completely independent of "remove unused css rules" and shouldn't be a sub-option. It's no big deal but definitely illogical. I quite often want to remove unused classes without removing unused rules (e.g. when fixing up merged books) and have to work around this.