What's happening with WhatsApp?

When creating a post, within WhatsApp, I do not get any feedback from Voiceover. I hear letters as I type, yet, when I have completed a word and press the space, I hear nothing. This only happens within WhatsApp and not within other applications, such as Messages. Using IOS 13.7, on an IPhone 11 and I have Voiceover set to read characters and words. What's happening in WhatsApp? Has anyone else experienced this?