Alphabetically sort navigation sidebar?

I’ve sorted my outline topics alphabetically but the sidebar navigation list of topics stays unsorted. I clicked on them and tried to sort them alphabetically, but OO5Pro didn’t execute the command. Do I have to manually sort the sidebar navigation topics? It’s odd to have one sorted and the other not.

Problem seems to have solved itself. Now can alphabetize the navigation sections. Don’t know why that happened. Oh, well.