When I look the summaries of bugs I can see that bar graphs are correct but the pie graph are wrong :
on this example :

you can see that I should have :
- about half "new" --> orange
- about half "closed"
- only one "assigned" --> blue-green
It appears that the x values of the bargraph don't match with the order of the pie-graph, it's just the opposite, like two arrays read once from the top and once from the bottom.
Any solution ?
I use jpgraph-1.20.2 and mantis-0.19.4
Antoine