No, I haven't. I looked at my phone and had no idea how to respond to that message. As soon as you find out that your contact can see how long you've been writing, it's even worse.
The best thing about FM WhatsApp apk is that you can type the perfect answer until you're ready to send it. If you don't want people to know that you're typing or recording, you can hide the typing and recording indicators with this mod.