While looking at bug#35208 and bug#35233, I spotted one more place in
gnus-group.el which sets the gnus-group text property to the group's
active info instead of its name, namely in
gnus-group-prepare-flat-list-dead.

Is the attached patch, which includes some extra cleanup, okay to push?
Or have I misunderstood something?

Thanks,

-- 
Basil