[WindowsCentral.com]

Conversations still remain accessible from search.
What you need to know

[LIST][*]Slack DMs and starred channels are missing from the sidebar for some users today.[*]Slack has acknowledged the issue and is working on a fix.[*]It appears you can still access missing conversations via the search bar.[/LIST]
If you've noticed your Slack DMs and starred channels have gone missing from the sidebar today, you're not alone. Slack has acknowledged the issue and is working on a fix for affected users. For now, it appears conversations remain accessible through the search UI.
From Slack's status page:

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