In the scene where Robert is conducting the Brass Band, a picture of a Mexican (Mr. Tuttle dressed-up) and a dog (Dinky) is visible. These two characters don't appear until later in the picture and Robert only sees the picture for the 'first time' at Mrs.Blossom's picture exhibition after that.
Mrs Blossom offers Tuttle a cup of tea, picks it up in both hands, then the shot changes and then she picks it up again from the tray.
When Mrs Blossom meets Mr Tuttle they play a game of snooker. The last ball potted is shown, a green ball. In snooker the last ball is always black. There is no reason that they were not playing according to the rules.