Harry, 42, and Meghan, 45, hold the titles of the Duke and Duchess of Sussex.
Harry appeared to have mended relations with his father, King Charles III, who is battling cancer, during more recent UK visits.
But Harry reportedly remains estranged from his brother, heir to the throne Prince William and wife Catherine.
On the field, Leicester defeated Gloucester 38-31, with the Cherry and White suffering their first league defeat of the season.
The crowd reaction showed that Harry and Meghan have a long way to go when it comes to winning back the admiration and respect of the British people.
Harry has been branded a traitor in sections of the UK media for abandoning the royal family and his duties as Duke of Sussex. Meanwhile, American Meghan has always faced an uphill battle winning over the British public.
– AFP