Rocket.Chat's Community Open Call 🎤 Jan 19th, 2022 Join us!

Embedded layout of channel not having Audio and Bold Italic text formatting things

Hello there,
I have integrated the the channel screen in my project with the help of embedded layout with Iframe,
and the channel screen is open successfully.
But the question is The Audio icon and the Bold, Italic buttons from bottom of the chat input is not showing. why?
And also need to know what features are not applied while using Iframe, can you provide me that link?