Would you please be so kind and take the above as a honorable feature request? :)
I just cannot avoid thinking that there is something weird, quirky and unstandardized in not knowing at a glance what group I have opened while I am viewing or working with its content.
I know I can see the title using a "workaround" like the one you recommended but, believe me, on account of being considered a strange behavior.
Regards.
Leoram.