I don't know if this helps but I think I fixed this by using Nicolas' answer in https://askubuntu.com/questions/1103461/slack-shows-opened-links-to-browser-as-another-slack-instance-in-task-bar?rq=1
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766230 Title: Strange window matching behaviour between Slack and Chrome To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1766230/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
