@thunderbird@mastodon.online Ah: The interim/beta versions Thunderbird 57 and 58, released in late 2017, began to make changes influenced by Firefox Quantum, including a new "Photon" user interface. That Firefox was a disaster & that's when Thunderbird went downhill. Dig out 2008 versions of TB & FF. Run then on XP (with win9x style theme, no animation*), Debian +IceWindow Manager, Redhat etc of 2008 or earlier. See how bad it is now. [*BTW I can do that in a VM on Linux Mint 22.3, Mate & Server 2003 theme]