Chow Loong Jin, that text you quoted is about the body text, not the title text. The title text should be only one line, as described at <https://wiki.ubuntu.com/NotifyOSD#Title%20text>.
Chow Loong Jin, that text you quoted is about the body text, not the title text. The title text should be only one line, as described at <https:/ /wiki.ubuntu. com/NotifyOSD# Title%20text>.