Thunderbird is still in English when using Thunderbird persistence feature with a different system language
Since 3.9, my Thunderbird is in English (with French language).
In 3.9.1 and 3.10.1 is still in English, despite the fix of #15942 (closed).
I used the Thunderbird persistence feature with a persistence created before 3.9.
In 3.10.1 launched without persistence, Thunderbird is in French.
Feature Branch: bugfix/16113-thunderbird-always-guess-locale
- Related to #15942 (closed)
- Blocks tails/accounting#15506