Not sure how tab groups actually work, but tab groups, when closed, should have the contained windows as inactive, particularly if they are pinned and open every time the window opens. Other browsers have in the past and apparently still do, keep eve...
Great idea. The more tabs are utilized, the more important it becomes to be able to tell, at a glance, which tab is which. When, for example, you open multiple amazon tabs, they all are just named 'Amazon.com' and being able to rename them after the ...