open default/first group?
Is there a way to open/expand a default/the first group when the extension button is pressed?
There isn't, as far as I know, and I'm not sure why you would want to expand the first group while the current group may not necessarily be the first.
However, you can press the right-arrow keyboard shortcut to jump to the current group in the list, which is probably what you're looking for.
I am not sure if we are looking for the same thing, but I would like to find a way to open all the tabs I previously opened in the default group that opens when you open a new browser window. It is white in colour like the image below:
I can see all the tabs in the "show other tabs" section, but I can open them all back in the default group.