f(x) Krystal's attitude on TV is becoming an issue once again.

On June 14, f(x) made their appearance on Mnet 'Wide Entertainment News' to promote their new album.

On this day, MC Hong Jong Hyun questioned Krystal "I heard Krystal is two-faced.” Upon hearing this, Krystal bit her bottom lip in frustration. However, this face expression was broadcasted on TV and the captures of this part is now being spread fast online.

Krystal has been rebuked for her face expressions in the past. On the SBS 'Running Man', she was also accused of staring down at KARA's Han Seungyeon.

Internet users who saw the captures are commenting "It's not good to show exactly how you're feeling on TV", "She needs discipline,” and "The comment was a bit too much.”

Photo: Mnet