The new Thunderbird version 102.0 has some issues. the address book is configured and different. It is similar to but not exactly like a web page. for best results in navigating it, turn off virtual cursor and then use tab key to get to the list of your addresses. first letter navigation does not work as it did in the past in the address book, so you will have to use the search field which now appears in the tab order of the items in the address book. Type the first few letters of an address you want to highlight and then tab to the list and you will land on or near the proper address. Use up and down arrow keys if you don't land exactly on the desired address. This isn't to dissimilar to the way preferences were changed to be more like a web page a few years ago in Thunderbird. it takes some getting used to but is quite usable once you understand what is happening.
In addition, the Mozilla apps enhancement feature for Thunderbird is broken. I hope the developers will be able to fix this add-on so it works as it did in the previous versions. We should all send them e-mails to make them aware of the issues and desirability for a fix.
For a nation to admit it has done grievous wrongs and will strive to correct them for the betterment of all is no vice;
For a nation to claim it has always been great, needs no improvement and to cling to its past achievements is no virtue!