

Once again, on Mozilla support people will say that it is updated automatically, but I’m not sure there’s much experience of Linux there. You could also remove the system version and use the downloaded version instead, but I’m unsure of how updates are handled (if at all). I’m guessing this has changed a config file somewhere. Deleted downloaded Thunderbird and ran system version - Lightning still localised!.Ran system version of Thunderbird - Lightning is localised!.Ran it from a file manager - Lightning is bundled and localised!.I’d seen suggestions that the Thunderbird people wanted you to download it as a standalone, so I thought I’d try that. I eventually removed the Lightning add-on and found the system package which reinstalled Lightning, but in English. Having done a fresh Irish language install of Ubuntu when 18.04 arrived, I did have both Thunderbird and Lightning (installed through add-on system) in Irish until one day Lightning was somehow auto-updated to version 60 even though Thunderbird was still on 57(?!). but the interface will be in English, not your chosen Thunderbird language it can be installed through a package ( xul-ext-lightning) as described by A.B.it doesn’t magically appear by removing the old add-on and restarting, which people in Mozilla support forums suggest as a solution (possibly because how it’s packaged in Ubuntu hasn’t caught up with the change yet).it cannot be installed through the add-on system.Information about the changes in how Lightning is treated post-Thunderbird-60 is a little thin on the ground. I have found a solution, but I have no idea why it works.
