ICU 67 added https://github.com/unicode-org/icu/pull/952 which removed the -true in toLanguageTag. This is causing the mentioned test to fail since the flatpak SDK was updated to 0.3: > FAIL > test/intl402/Intl/getCanonicalLocales/unicode-ext-canonicalize-yes-to-true. > js (default) > Full Output: > Exception: Test262Error: Expected SameValue(«und-u-ka», «und-u-ka-yes») to > be true > > FAIL > test/intl402/Intl/getCanonicalLocales/unicode-ext-canonicalize-yes-to-true. > js (strict mode) > Full Output: > Exception: Test262Error: Expected SameValue(«und-u-ka», «und-u-ka-yes») to > be true >