Cannot make the attachment disappear after hitting updated button

According to this documentation, the attachement supposed to disappear after hitting the updated button ( see the gif ):

But the problem is after my respond message has been sent, the attachement won’t disappear. Please help me. Thank you!

I found another post with the same issue but no solution

I have asked our team to try and reproduce this. Waiting for a response,

@minhvv13 Thank you for the report. I’m able to reproduced. Ticket has been filed to further check -

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Hello @minhvv13! Our integrations team have updated the code examples at Let me know if that works for you or if you have any clarification, feel free to comment in that PR (though it’s already merged).
I’m closing this now.