I just downloaded slack-desktop-2.0.3-amd64.deb from Slack's website which is v2.0.3 and it's not fine on 16.04.
When you run Slack from the command line you can see below: Creating Slack Application (electron) submitUrl is deprecated. Use submitURL instead. (electron) ipc module is deprecated. Use require("electron").ipcMain instead. [Error: Failed to get path] (electron) loadUrl is deprecated. Use loadURL instead. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1547448 Title: Ubuntu 16.04: Notifications of some apps displayed in a classic window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1547448/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs