Thunderbird email addresses do not appear in Firefox email link
I have been using Mozilla Thunderbird and Firefox for many years. Currently am using Firefox version 82.0.2 on a Windows 10 laptop. My email addresses are located in my Thunderbird account (version 98.4.1). These new versions are the outcome of recent upgrades to my Mozilla installation.
Now I find that email addresses are no longer available when I email a Web link to another party. My routine has been to use the File>Email link in Firefox, then to choose the recipient from the Address Book>Collected Addresses display.
Could some charitable subscriber to this forum please tell me how to restore the missing address list to Firefox?