In an HTML content field on a page where the custom branding is applied, the cursor is jumping around while editing the UL/OL (Unordered list or Ordered list). If you pressed enter to go to the next line (new LI or bullet/number), the new bullet/number gets created but the cursor jumps back to the previous bullet. Hence unable to add text to the newly created bullets. Even with the arrow keys you can't go to those bullets. Cursor just doesn't stay there.
This appears to be an issue with Chrome. I had the same problem using the standard content editor webpart in SharePoint 2013, so I tested it on three different servers, and the behavior was exactly the same. About a half a second after you click next to one of the bullets, the cursor would move either up or down. If you start typing fast enough you can prevent the cursor from moving, but that's hardly a solution. I thought that it might have something to do with bootstrap, but it also occurred on the default Seattle master page.
I normally use Chrome, so I decided to test the other browsers, and found that this issue does not occur when using Explorer or Firefox.