Police have booked the driver for the incident.
The trays of plates, cups, and rubbish occupied at least six tables and their seats.
The victim was swept away by the river's strong currents while attempting the rescue.
According to LTA, technical faults in some buses' on-board systems have disrupted the transmission of ETA data.
His condition took "a sudden turn" for the worse on 15 Jan and he deteriorated quickly over 12 hours.
Multiple neighbours have lodged police reports, but were told there was insufficient evidence for further action, she claimed.
Many well-wishers were surprised that he was already 50, agreeing that he looked younger than his age.
The reason behind the sudden closure was not disclosed.
The singer-actress was in Singapore to meet fans and reunite with her wax figure at Madame Tussauds.
Circle Line commuters are advised to allow extra travel time and plan alternative routes until 19 April.