Voice not selected by language/locale on iOS

[blukis]

On iOS, voice selection works OK when I include a valid "identifier" from getVoices(), e.g.

TTS.speak({
    text:"sample text", cancel:true, pitch:1, locale:"en-IN", identifier:"com.apple.ttsbundle.Rishi-compact"
}).then(...); // en-IN voice heard, as expected.

But when I call speak() with locale only (no identifier), it seems it uses the system language always, regardless of which locale I specify.

TTS.speak({
   text:"sample text", cancel:true, pitch:1, locale:"en-IN"
}).then(...); // System/default voice is heard, not en-IN voice.

Looking over logic in CDVTTS.m, seems this might not be by design.

• Tested on iPhone 12 mini
• Android working OK
• My workaround is to select the first identifier from getVoices() with a matching locale/language. (This works OK.)