According to the search results, Adele stopped her show in Las Vegas on August 28, 2023, to scold a security guard who was "bothering" an audience member. She paused her performance of "Water Under the Bridge" to ask what was going on with a young fan who had been standing up and being bothered by security and other people sitting behind him. Adele addressed the security guard directly, asking why they were bothering the fan and telling them to leave him alone. She then resumed her performance and restarted "Water Under the Bridge". Additionally, Adele has been dealing with back pain due to sciatica, which has impacted her performances in the past.