safari reading list order

I just went to the Reading List in Safari (on my iMac) to find a couple of things I had recently added to the list and found the entire reading list completely reordered in what appears to be a random order. The items I was looking for had been at or near the top of the list.

(a) what happened? and

(b) is it possible to sort the list again so that items appear in the order they were added, with the most recent at the top?

I saw the article about iCloud and keeping the reading list the same across multiple devices. I do not have Safari turned on in iCloud, so I don't think my phone would have changed the order on my iMac. I did recently do the OS upgrade to 12.6.3, which I think included a Safari upgrade.

OSX 12.6.3 Monterey

27 inch iMac late 2015

Safari 16.3