I updated Slack this morning. Updating meant re-downloading the app and replacing it in my Applications folder. Which is a common scenario on Mac, I am so used to it with OSX apps that I have no problem with this approach now.
What shocked me though is that Slack did not keep my credentials.
I have several Slack accounts. Apparently Slack developers expect me to log again to every one of my accounts each time the app is updated.
Ever heard of the user-data folder concept?