When I try to add a link by using Ctrl + K, the email draft essentially crashes. If I click on the email that I was writing, it dings/chimes. The email that was in progress is gone. It cannot be changed, does (did) not save as a draft, and cannot be closed. Other aspects of Thunderbird continue to work, and I can write a new email. However, to get rid of the email that was in progress, I need to shut down the app. Restarting the computer does not get rid of the problem. Any thoughts or suggestions?