Will I be required to show proof of onward travel when re-entering Thailand with a 30-day stamp after my SETV extension?

A user inquired about re-entering Thailand on a 30-day stamp after traveling to Malaysia, following their previous SETV extension. They expressed concern over whether proof of onward travel would be required at immigration, particularly since they have a flight booked back to the UK beyond the 30-day period. Responses varied: while some suggested that proof is often required (especially from airlines), others believed that the risk of being asked at the border is low. It was emphasized that immigration officer discretion plays a significant role in such scenarios.