Hello, i'm using thunderbird 60.5.3 64 bit on a windows 10 machine, i've notice that if i open a email (double click, open in new tab) it will open it, but if i go back to the main window and select another email, and then i go back to the tab with "other" email opened i see the selected one on the main window and not the one opened before (only the tab title doesn't change) also all the mail info (from, to, subject) are of the selected email and not the correct one.

Also, if i open an email in a new tab, then close thunderbird and then open it again then the tabbed email are ok and doesn't change when the selected email change.