Choi Si-won, of boy band Super Junior, caused outrage among Chinese netizens and was forced to apologise.
Suspension of previous ruling comes after Beijing’s harsh remarks against the decision to label the anti-mask law as unconstitutional under Basic Law.
The student admitted to vandalising a police station and MTR exit; his lawyer has asked the judge for leniency.
Almost all officers in the 31,000-strong force have to report for duty on Sunday in an unusual move for the city.
About seven more have exit the grounds seeking medical help as the five-day stand-off continues.
10,000 rounds of CS gas have been fired in Hong Kong since June. A former chemistry professor from Chinese University explains the damage it can do.
Measures are also being made to clear roadblocks outside the Cross-Harbour Tunnel, which has been shut for a week.
Lee Chi-cheung remains in a coma after confronting a masked group who had vandalised an MTR station in Ma On Shan.
Local media report that police arrested, stopped or searched students dressed in school uniform in Kowloon and the New Territories.
Lui Cheung Kwong Lutheran College cancelled classes after demonstrators shut down the school.