Dresden-born Leistner jumped into the stands following their 4-1 loss in the first round and climbed the steps to confront a spectator.
Browsing: Disciplinary Action
Djokovic, who has already been stripped of his $250,000 (£190,000) in prize money for reaching the last-16, was given a further punishment by tournament organisers for his actions on court against Spaniard Pablo Carreno Busta.
The club placed the dolls, some of which were dressed in the team’s colours, while others held placards supporting the side, in the stands on Sunday to make up for the absence of fans due to COVID-19 restrictions.