I'm trying to work with workspaces in Ubuntu 19.04 but I can't figure how to show only active apps on a deskop in the taskbar. I open Firefox in workspace 1, then change to workspace 2 and click the Firefox icon again but instead of opening a new instace on Firefox for that workspace 2 it does redirect me to the one running on workspace 1.
I've searched and found some people got it working in Lubuntu by:
Right click the taskbar, click 'Configure "Task manager"', and enable "Show only windows from desktop 'Current'".
I'm trying to find something like this in Ubuntu 19.04 but nothing happens when right clicking on the taskbar. Searched in Settings too but found nothing about this. Can anyone help me with this please? Any system setting, app or extension to do this?