I may have found another temporary fix for this while the team works on the bug and it's just two lines of CSS.
.user-css .article-content br { display: none; }
.user-css .article-content p br, .article-content li br { display: initial; }
The first line hides all br tags. The second brings them back only in the places you specify. In my case, if I use a br tag within a p tag or an li tag, then I want it to show up.