When using the "ru-RU" argument in the speech recognition settings, only English works on android!!!-the Russian language is recognized as English words-incorrectly
Everything is recognized well in the desktop version.
This means that Russian speech recognition ("Voice typing" on Android) is not installed on the device. Construct uses system speech recognition.
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IIRC speech recognition actually uses a Google cloud service, so it should support whatever that does. Either way it's not Construct itself that does speech recognition.