For 'Move to", recent destinations shows only one folder

Hi, Fairly new Thunderbird user here. I've searched the wiki and support articles, but haven't found anything that addresses this problem. Details: I'm running Thunderbird 156.0 on a Mac, running MacOS 27.0, accessing a Microsoft Exchange account using EWS. If I want to move an email, I right-click on it, and have the option to: Move to "Myfolder Foobar" again (last moved-to folder), or Move To: > Recent Destinations > Favorites > my.email.account.com (EWS) > Local Folders (Note that I can also drag the message to the appropriate spot on the folder tree.) Of the right-click submenu options: The first, Recent Destinations, appears to show a recent single folder (but not the most-recent one, which appeared on the upper-level menu pick). The second, Favorites, is empty, (and I haven't figured a way to populate this list). The third, my.email, opens up a submenu that allows me to traverse my extensive list of folders in my Exchange account. This does work properly. The fourth, Local Folders, shows my trash folder. My recent destinations setting is at the default value of 10. I tried changing it to 15 to see if that would jumpstart a change, but no change in operation. Thanks for reading this far. My questions are: Is this a bug, or am I missing a setting in TB or Exchange which allows me to have the recent list populated with more than one entry? How can I populate the Favorites list? Searching the Settings tab gives no results. tia, Tom