The WhatsApp app has been updated to version v 188.8.131.52, very soon after its last update a day earlier.
Like the earlier one it came without a changelog, but fortunately the benefit is obvious.
The earlier update had broken the voice messaging functionality, with users unable to listen to their messages. Version v 184.108.40.206, a day later, corrects that issue, which is pretty responsive of the WhatsApp team.
The updated app can be found in the Windows Store here.