We're looking into an issue with messaging
We believe we've resolved the issue with messages failing to send or disappearing. If you were previously experiencing this, a hard reload of Slack (Shift + Cmd/Ctrl + R) should now address this. If you're still having problems after refreshing, please don't hesitate to write us at email@example.com.
4:17 PM PST
We have reports that messages are seemingly disappearing or deleting. We are investigating and will post more information as we have it.
10:47 AM PST