This happens on my Kubuntu 20.04, but on my different machine with KDE Neon (Thunderbird 68.10. / Ubuntu 18.04) the dialog window is partly translated but also not fully. So the question is where the dialog comes from? OS or Thunderbird.
This happens on my Kubuntu 20.04, but on my different machine with KDE Neon (Thunderbird 68.10. / Ubuntu 18.04) the dialog window is partly translated but also not fully. So the question is where the dialog comes from? OS or Thunderbird.