Currently, when I'm using Firefox's tab grouping feature and I'm on a tab inside one of the groups, clicking "New Tab" opens the new tab outside the group.
This behavior feels unintuitive and frustrating. Every time, I have to manually drag the new tab back into the group I was working in, which breaks the workflow and adds unnecessary effort.
It would make much more sense if, when I'm focused on a tab within a group, the new tab opens inside that same group by default.