Apple released a new feature called Reactions. Reactions are currently enabled by default on iOS 17 and macOS Sonoma. When Reactions are enabled, emojis can appear during a video call based on a perceived gesture by the video participant with iOS 17 or macOS Sonoma installed. This isn’t a feature made available by Therasoft so we don’t have control over these settings for iOS.
To disable this feature on macOS:
For more information, see Use Reactions, Presenter Overlay, and other effects when videoconferencing on Mac.