I cannot reproduce this issue, for me the default is `metric` and switching to `imperial` keeps the settings after restart. Also checked with VPN pointing to US to have `imperial` by default and switched to `metric` still no issue after restart. @forum_dyskusyjne do you have by any chance "Delete cookies and site data when Firefox is closed" checked in the settings?
Bug 2008389 Comment 4 Edit History
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I cannot reproduce this issue, for me the default is `metric` and switching to `imperial` keeps the settings after restart. Also checked with VPN pointing to US to have `imperial` by default and switched to `metric`, still no issue after restart. @forum_dyskusyjne do you have by any chance "Delete cookies and site data when Firefox is closed" checked in the settings?