[Accessibility, MacOS, VoiceOver, TextField, TextArea] Keyboard copy shortcut (CMD-C) not spoken on MacOS with VoiceOver in TextField and TextArea

On MacOS when using keyboard shortcut for copy (CMD-C) with text in TextField and TextArea controls, this shortcut is not spoken by VoiceOver.

Reproducible: always
 
Steps to reproduce:
0. Turn on VoiceOver (CMD-F5).
1. Execute text component demo java -cp Hello.jar (hello.HelloTextArea, hello.HelloTextField)
2. Enter some text and select some some of it using Arrows and the Shift key.
3. Type CMD-C to copy the selected text into the paste buffer.

Expected result (as in native elements like Notes): VoiceOver says "Copy".
Actual result: VoiceOver doesn't say anything .

RULE tests/voiceover/TextArea any any
RULE tests/voiceover/TextField any any
RULE tests/voiceover/PasswordField any any