Variable columns do not show on List Report when selected table is a Database View

Unable to add Variables to a report if it is a dot-walked field.

1. Create a report on the sc_task table or database view sc_task_sla.

2. From the Available list, find Request Item [+], and expand it to dot-walk to sc_req_item.

3. Find Variables [+] and expand it.

4. In the pop-up window, select any variables from the list and add it to the selected list.

5. Run the report.

   The selected variables do not show in the report columns.

6. Create a report on sc_req_item, and perform same actions.

   Variables show up correctly in the report column.

In all current releases it is not possible to report on variables through a database view, this is working as designed.
The only option is to report against the table that contains the variables directly.