Pie Chart Report Data overlaps and statistics not readable after upgrade to 8.15

Issue Summary

Pie chart label fonts overlapping with each other after upgrading Jira

Steps to Reproduce

• Create a Pie Chart Reports
• Navigate to Software Project > Project Reports > Pie Chart Report > Statistic Type as Assignee > Next
  • Pre-Requisite : The labels will overlap in case some labels are having too long text
• The Report will be generated and will have some data like below:
  

Expected Results

The Pie Chart Report data should not overlap
Image from previous version i.e. 8.2.2:

Actual Results

The Pie Chart Report data is overlapping

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available