The only way to read the full title of a chat in the side bar history when the horizontal space doesn’t suffice seems to be to click the three-dots menu and go into renaming mode, then abort renaming. Please simply add the HTML title attribute to the respective elements, and set it to the respective chat’s title, so one can get to know a long title by hovering the mouse cursor over it.
Whoa! This was already changed now. Thanks!