Comment 2 for bug 272516

If this is intentional behaviour, then it is inconsistent with all other applications that allow text formating. I know of no other application that allows text formating which behaves in this manner. Therefore, please reopen the bug and change the title to "Zim formating behaviour inconsistent with with established, intuitive behaviour."

I am not familiar with the Gnome HIG (I am not even sure if Zim is considered a Gnome application, I mention it because of the GTK widgetset), but other HIGs that I am familiar with either discourage or prohibit such inconsistent behaviour.