Legends should work on click.
The legends on chart should work on click. This can be an enhancement.
Steps to reproduce :
1. Create a sample report.
2. Add required fields in it. (month, Camp Region, Camp Country, Camp Name).
3. Do the Aggregation as count on Camp Region, Camp Country & Camp Name.
4. Select Stacked Vertical Column Chart in Chart section.
5. Add Month in in Horizontal axis & Camp Region, Camp Country & Camp Name in Vertical axis.
6. And Publish the report.
7. Here Camp Region, Camp Country & Camp Name will display as legend on chart.
8. After clicking on that it should show respective data on chart.
Please find attached screenshots & YFX.
Thanks & Regards,