Why did a friend send a message (looking at the flashing head) when I clicked in, but I didn't?

If QQ friends on the mobile phone are dynamic there, prompt them to talk about what their friends sent, but after clicking in, they can't see the newly published conversation. This may be because:

1. My friend just made a conversation and thought it was inappropriate, then deleted the conversation so that others could not see it.

2. Friends have set access rights, that is, they can only watch by themselves or one friend can watch, but one friend can't.

3. After publishing, set the conversation as a private conversation, so that even if others receive a prompt to update the conversation, they can't see it.

4. Another possibility is that there is an error in the application background, and my friend didn't tell me about the update, so this situation will not be updated.

Therefore, when the mobile phone sees the dynamics of friends there, it prompts a friend to update the situation, but it can't be found after clicking on it. That should be the reason.