Stacked by does not work on a choice list field where equal values have multiple different display values - Known Error

Stacked by does not work on a choice list field where equal values have multiple different display values Description The State field on the task table has multiple display values for the same underlying value on the extending tables (incident, problem, change, etc.). If you use the same value in your choice list on extended tables, the Group and Stacked by feature of the report may not work correctly when reporting on the base table. In addition, if you use the same label for different underlying values, you may see additional problems when reporting on the base table. Steps to Reproduce

Create a report based on task. Group by task type. Stack by state. Turn on the display grid. The data in the chart is different than that in the display grid. Workaround There is no known workaround for this issue. If you are able to upgrade, review the Fixed In field below to determine the versions that have a permanent fix. You can also subscribe to this known error article (click Subscribe button at the top of the article) to receive notifications when more information is available about this issue.