When clicking on either "Columns" or "R Columns" in the Referential tab of the Describe Objects screen, it takes several clicks before the column values are actually sorted alphabetically.
Steps to Reproduce:
1. Open Editor
2. Open Schema Browser and select a table.
3. Press F4 to describe table.
4. In the Describe screen, click the Referential tab.
6. Click on "Columns" and "R Columns" to sort values.
Actual results:
It takes several clicks to sort the values in these columns.
