When Victor is watching Lottie sing and doing a drawing on the table, the champagne bottle in the bucket is leaning away from him. But on the next cut when Lottie is approaching his table, the position of the bottle has changed and is now leaning towards him.
Kendall is exhumed at night with lamps for light. There is no urgency, so it would be normal for the body to be exhumed the next day.
The story, set in the 1890s, makes reference to the Courts of Appeal. These courts, however, were not established in the UK until 1907. Before 1907 only the Home Secretary could commute a death sentence.
When Supt. Buckley is at the cemetery excavating Kendall's body, both Emmric and Mrs. Benson show up. But Emmric and Mrs. Benson are civilians and the excavation is a police matter. The film does not explain how they found out about the excavation in the first place and why they were allowed to stay there. Even Grodman, a former Superintendent, had to get invited by Buckley.
Although the Superintendant may feel guilt about the death of an innocent man, it is unreasonable and unrealistic for the public to assign all of the blame to him ignoring the roles of the judge, the prosecutor, the witnesses, the jury, and even the competency of the defense counsel.