Selecting multiple Text List items

I have a text list with about 20 items. I enabled ‘Allow multiple rows’.
Using command-click, I can select more than one row, BUT I want to be able to unselect a row also. But using command-click on a selected row does not unselect it. I thought most Mac lists allow that ability.

Someone hopefully will let me know if I have missed something, or Jim would consider adding this ability if I haven’t missed something.