I've got an application with lots of existing text from a prior version of the RadEditor (2014), and it's all in NewLineMode = Br, so the lines are separated by <br/> tags. One option I read about was putting in a bit of JS which lets the new version (2017.3.913) use "legacy behavior" for block comments, such as bulleting lines of text. I tried it, but found it had another problem: It would duplicate the lines it was bulleting. See attached images for the "story".
This is low priority for me, since I've already decided not to use Legacy mode anyway (nor BR line mode). Otherwise I would be opening a ticket. But since it's not that important to me, I thought I'd just ask about it here, and see if anyone else has noticed this, or if the company is already aware of it.