This started in 2012 and it’s back in 2019. The titles are now “Legacy Titles” and they’re suddenly broken for me. They’re not only not updating (I, too, always use that little tool in the upper-left to create a new title based off the existing one), but new ones are not “taking” at all. I create a title in the editor, apply a background, colors, etc., and every title shows as a black box in the Assembly bin. When I drag them onto the timeline there’s literally nothing there. If I double-click to open them back up in the Title editor, they’re empty.