Thank you for your continued feedback. This is now available in Developer Public Preview. To learn more, please visit https://docs.microsoft.com/microsoftteams/platform/bots/how-to/conversations/channel-messages-with-rsc.
An error occurred while saving the commentDominik Hölzl commented
Is there any progress on this?
We would need this feature to be able to track all content which was created by our teams app through search extension and unfurl action.