Find a better way to display long page titles on the sidebar

I found really annoying the way the current sidebar displays the list of pages when they have long names.

Currently you have to hover over the link to read the full page title or drag the sidebar until it grows to half of your screen state to be able to read properly long page titles, both solutions are time-wasting workarounds.

It would be nice if we introduced a line break on the page titles, or some other nicer solution that allows you to read the space tree structure without any mouse clicking/movements.