Wednesday May 7, 2025

Summary

From May 5, 2025 at around 8:22 AM PDT until May 7, 2025 at 10:36 AM PDT, users may have experienced missing notifications in open channels and direct messages.

We traced this issue to a recent code change that incorrectly set the window focus state. As a result, Slack mistakenly treated some windows as active which prevented notifications from triggering as expected. The underlying bug in the focus state logic was corrected, restoring normal notification behavior for all affected users.

If you are still experiencing issues, please refresh your Slack app using Cmd + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux).

11:56 AM PST

Resolved

The issue causing missing notifications in open channels and direct messages has been resolved. To ensure notifications function as expected, please reload Slack using Cmd + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux). Thank you for your patience as we worked to restore normal service.

11:20 AM PST

Cause Identified

We've identified the cause of the problem and we are deploying a fix. We'll be back as soon as we have more news.

10:31 AM PST

Investigating

We're investigating reports of missing notifications from channels and direct messages when the channel or direct message is open in Slack. We'll be back with an update once we know more. 

7:07 AM PST