I know that some window managers are capable of it. Though I use Macs primarily, so I want Apple to fix it. :) Realistically though, cross-platform products l

I know that some window managers are capable of it. Though I use Macs primarily, so I want Apple to fix it. :) Realistically though, cross-platform products like Firefox would need Windows and all Unix/Linux window managers to handle this too, in order to completely avoid home-grown code to mimic tabs.