WordPerfect strange

This isn't an Office problem but there is no place for just WordPerfect stuff itself.

All of a sudden, when I selected 'Open', all of my WordPerfect listing is backwards and upside down; that is, the very last file 'ZZZZZZ' appears first and the very first directory is listed last. I don't know what (or if) I did something to re-order the file listing. But I definitely don't know how to get it back to the 'normal' order of listing. It's not a killer deal and one can get used to it but it is disconcerting - and very strange. This occurred some time ago and was right after I brought WP up from the desktop. One day it was 'normal' and the next it was reversed.

Any thoughts?