Rumours about "Bang Bang" actors Hrithik Roshan and Katrina Kaif's uncomfortable equation have surfaced yet again.

Previously, reports had claimed that Roshan had found a friend in Kaif, who was helping him deal with his separation from wife Sussanne Khan. But then, speculations emerged that the actress is now maintaining a distance from her co-star, after link-up rumours cropped up.

And now, the latest reports claim that the "Krrish 3" star is annoyed with Kaif, due to her unprofessional behaviour. Recently, Kaif's alleged boyfriend Ranbir Kapoor visited her on the sets of "Bang Bang".

Kaif reportedly halted the film's shoot for several hours in a bid to spend time with Kapoor, reported One India. Roshan and the crew members had to wait for her, and the actor was reportedly annoyed with his co-star.

"Bang Bang" went on floors in 2013 but the film's shoot was delayed as Roshan had to undergo a surgery for a head injury. And as the actor was recuperating, his work commitments were affected.

Roshan resumed shoot for the Siddharth Anand directorial from February 2014. However, the actor has been reportedly facing some health problems again, which have slowed down the production. Apparently, Roshan's back problem has started to trouble him again, and the star reportedly travels in a convoy of three cars now and swaps them often, in order to avoid identical seating position.

Besides the health issues, Roshan is also facing marital problems as he is going through separation from Sussanne. But despite undergoing physical and emotional stress, Roshan is working hard to complete the film on time. In such a situation, a delay in the film's shoot due to Kaif's alleged unprofessional attitude is bound to irk the 40-year-old.

Meanwhile, a report by Deccan Chronicle has played down rumours of delay in "Bang Bang" schedule and claimed the film will stick to its 2 October release date.

"October 2 is the release date for 'Bang Bang'. There is absolutely no way that the date will be changed, especially since October 2 is a Thursday and a National holiday. By no means would the makers (Fox) let go off a lucrative four-day weekend," the daily quoted a source.