Muslim groups in India, reportedly upset at the film's depiction of the community, have prevented screenings in Tamil Nadu, Karnataka, Andhra Pradesh and Kerala.
Lead actress Pooja Kumar spoke to Bollywood editor for Cineworld Cinemas Ashanti Omkar about working with Haasan on the controversial new release.
"This is my first time working with an actor who is also the writer, producer and director, so it was quite an eye opener for me," she said. "When we were rehearsing the scenes he was my director and then when we were ready to shoot, I shut off the director and switched to the actor who is my co-star.
"What was so fascinating to see was that he seamlessly transitioned between roles.There was no hesitation or conflict in his mind of what had to be done. This is one of the biggest films to come out of India, so we should all commend him for the effort."
Kumar went on to speak about her role in the project, saying: "I play a nuclear oncologist and I'm married to Kamal sir's character Viswanath. We live in New York and I basically married him to get my PhD and green card so that I can pursue my career.
'My character is working on curing cancer - something spurred on by the death of her father. However, my life is not what I thought it would be and my husband has more to him than meets the eye."
The Tamil version of the film is out now, with a Hindi release following on February 1.