When the Euro 16 football final went into extra time, and the programme extended, if I went Channel UP so that I arrived at BBC1, it showed the program title on the right as Euro final.
But if I went Channel DOWN (from BBC2) to BBC1, it showed BBC News (ie as scheduled before the football overran) as the programme title.
It might have been the other way round 🙄
Strange … it presumably gets the programme title from different places in the two cases.