With Piwik 1.5, legend of vertical bar graph is illegible and useless, because characters are displayed on top of each other.
I set the minimum font size to 16 in my browser (Firefox 5 on Ubuntu
We don't handle minimum font size variants
Indeed, I still have this bug even when I don't set minimum font size. The bug occurs when a string in the legend is too wide and not truncated. See the new screenshot illustrating the bug with the default display (no minimum font size).
Thanks for the report.
Note: it's a wontfix as such. However, we will implement horizontal bar charts, which allow for longer labels. Then, each bar will have its own label. Horizontal charts are now covered in: #2704 but we'll then create a ticket for the Jqplot horizontal bar request.