Why the timestamp of messages based on platform?

[LeiHao0]

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Summary

I confused why the timestamp of messages based on platform? (only if the login user is admin)

Environment Information

• React Native app: beta
• Mattermost Server Version: 3.9.0

Steps to reproduce

1. Login as Admin
2. change iPhone's Data&Time
3. post a message

Expected behavior

mattermost-redux/src/actions/posts.js

const timestamp = Date.now();
...
  create_at: timestamp,
  update_at: timestamp

Observed behavior

The timestamp of this Message is based on iPhone's not sever's

Possible fixes

[ThiefMaster]

Probably because the post is created immediately in the UI, even before it has been sent to the server. I'm pretty sure this will eventually replace the timestamp with the one from the server.