you can come back to the old UI following these steps: Revert Slack desktop app 1. Close the Slack app 2. Open the terminal and run these two commands separately: 3. a.

export SLACK_DEVELOPER_MENU=true

4. b.

open /Applications/Slack.app

5. Open Slack’s console by pressing command + option + I 6. Run this in Slack’s console: 7.

localStorage.setItem("localConfig_v2",localStorage.getItem("localConfig_v2").replace(/\"is_unified_user_client_enabled\":true/g, '\"is_unified_user_client_enabled\":false'))

Restart slack with command + R Source: https://www.reddit.com/r/Slack/comments/16iiphb/hate_the_new_ui/

Looks like this doesn’t persist 😞