When I select "Trash" and move the cursor over to the body of emails, all the emails in that folder disappear. Also, if I ever want to print preview any email, the display appears and immediately disappears so that I can't view it before printing. The company who looks after my laptop (Windows 10) if I have problems, says it is a Thunderbird known problem which should be solved by the latest update. I have checked the version I am on which is 68.12.0, successfully installed on the 29 August 20. Can anyone help me to solve these problems please?