She pleaded not guilty to charges of incitement, her lawyer Khin Maung Zaw said, adding she “seemed to be in good health,” a week after she skipped a separate hearing because she felt unwell.
Each charge carries a maximum of three years in prison.
Ousted president Win Myint has also pleaded not guilty to incitement.
Tuesday saw the court hear prosecution testimony that Suu Kyi flouted coronavirus restrictions during elections her party won by a landslide last year, her lawyer said.
Next month she will face a new trial on corruption charges, and she has also been charged with violating a colonial-era secrecy law, although this has also yet to come to court.
Her NLD government was deposed by the military for alleged voter fraud during the 2020 polls, in which it trounced a political party aligned with the generals.
Security forces have killed more than 1,100 civilians since the putsch, according to a local monitoring group.
The military says the toll is much lower.