Since my upgrade to v1.14.1, i cannot see the 'row evolution' when the page title have an apostrophe. The graph is shown but without any data and the page title is truncated. For example, "Qui fait quoi? - L'Aller-Retour" have an apostrophe and piwik only see "Qui fait quoi? - L". It's probably the reason why the graph is empty.