If a Code Insights report has fields with the same name, switching back and forth to another report would cause duplicate fields with that name to be added many times
- At least having 2 code insights reports, in the report A include 2 or more fields with the same name - "Field A"
- Open the report A, switch to report B
Report B should only contain its own fields
Report B has extra 2 fields "Field A" added on top of its own fields
Switch back to report A, more "Field A" are added on the report A
Keep switching back and forth would add more duplicate "Field A"
Affect front-end only
- Refresh the page and re-open the report
- Modify your code insights reporter to only provide unique field names.