Audio mic button + formatting buttons disappear when loaded in IFrame

I’m loading RC private group in an IFrame and I have an issue with voice button + message formatting buttons not showing up. It looks the buttons are shown after a successful login but they disappear immediately.

I’m using Nginx reverse-proxy + LetsEncrypt on the server.

I solved it and will share the solution here in case someone else got bit by this. :slight_smile:
Add allow="microphone https://your.rocket.chat" to your iframe and boom!

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