Slack: switch back to the old experience (UI and theme)

If you are struggling with the new UI in Slack application, and you’re running it on Mac or Linux, you can switch it back (may work for the Windows app too, I think). Thanks to this tweet from @QuinnyPig. 1. Exit from the running Slack instance 2. Open a terminal, and set the SLACK_DEVELOPER_MENU variable:…

https://rtfm.co.ua/en/slack-switch-back-to-the-old-experience-ui-and-theme/