I have just upgraded to TB 3.1.3 Portable.
When I need to open the inbox of any of my accounts, I have to right-click the Inbox icon and then click 'Open'.
After this I have to follow the same procedure for each message in the Inbox this time by right-clicking the Message and then clicking 'Open Message in New Tab'
I have re-installed TB3.1.3 Portable three times now but I am still getting the same results.
Has anyone encountered this issue, please?