Steps to reproduce:

1. In User Settings, choose French as language
2. In Latest Data, check the box Show items without data
3. Create an ad-hoc graph, including items with no data

Result:
Items without data are diplayed as "sans données" in French and the ad-hoc graph is cropped at the bottom (see "accents.png")
Expected:
When the box Show items without data is unchecked, the ad-hoc graph is correctly displayed (see "no-accent.png").

It seems that the "é" character increases the spacing between each line compared to a graph without "é".