So which team might have screwed up here? Is this a UI issue or a backend/system library issue? What about the previous root account unlock issue?
A few years ago there was a noticeable increase in the frequency of point updates at the expense of quality. In agile, testing either (a) relies heavily on automation or (b) only tests that particular story. In highly complex systems that's often not sufficient and rarely do security teams for example involve themselves on a per story basis.
Personally I think the industry as a whole needs to sit back and realise that Agile wasn't the panacea it was made out to be.
But the TDD cargo-culters and UncleBob fans forget that inconvenient fact and think TDD solves ALL problems