Hi everyone,
i'm using prd v3.9.1 and i have an issue with bar chart in subreport. I have a few groups in main report and the subreport is in details. Bar chart in subreport is placed in report header. The expected output is to see a bar chart for each group of main report but prd shows chart only for the last group. I tried to run it in prd 3.9.0 and prd 5.0.1stable and they show charts correctly.

What is the problem? Why 3.9.1 not shows correctly?
Thanks for attention and sorry for my english