Quoting The Straits Times, the captain was suspended and the flight attendant was also grounded. A spokesman said the flight attendant was clearing the meal trays in the cockpit and was cleaning up stains on the cockpit window. The flight attendant sat in the pilot's seat to clean the stains. Then, she requested the captain to take a picture of her in the seat, which the captain obliged. The airline clarified that this would not affect the safety of the flight but the captain was stopped from flying in accordance with the company's SOP.
Source: The Nation Bangkok February 13, 2019 21:00 UTC