(In reply to Makoto Kato [:m_kato] from comment #3) > This test seems to depend on Android version. Android API 29 or 30 will pass these. Right, Android with you bold/italic/bold-italic style as a fallback when the corresponding Mathematical alphanumeric characters are not available. https://searchfox.org/mozilla-central/rev/4044c34031d035fadb588143297ba5421419d44b/modules/libpref/init/StaticPrefList.yaml#9414 Probably some more recent version of Android have fonts pre-installed with Mathematical alphanumeric characters.
Bug 1010679 Comment 4 Edit History
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(In reply to Makoto Kato [:m_kato] from comment #3) > This test seems to depend on Android version. Android API 29 or 30 will pass these. Right, Android will use bold/italic/bold-italic style as a fallback when the corresponding Mathematical alphanumeric characters are not available. https://searchfox.org/mozilla-central/rev/4044c34031d035fadb588143297ba5421419d44b/modules/libpref/init/StaticPrefList.yaml#9414 Probably some more recent version of Android have fonts pre-installed with Mathematical alphanumeric characters.
(In reply to Makoto Kato [:m_kato] from comment #3) > This test seems to depend on Android version. Android API 29 or 30 will pass these. Right, Android will use bold/italic/bold-italic style as a fallback when the corresponding Mathematical alphanumeric characters are not available. https://searchfox.org/mozilla-central/rev/4044c34031d035fadb588143297ba5421419d44b/modules/libpref/init/StaticPrefList.yaml#9414 Probably some more recent versions of Android have fonts pre-installed with Mathematical alphanumeric characters.