thedjpetersen/subway — comment on commit c06e46909405ec34dd65fa0d51d38ae8e6e4e573
File: assets/js/views/chat_application.js line 26
By akavlie:

Wait, 60 seconds?? The only reason there's a delay at all is to prevent this from activating on quick switches to the address bar and such.
The intention was that focusing on other applications would result in unread message notifications, the same as focusing on other channel tabs within the app.