Navneet Nishan might be an experienced actress, but her recent behaviour on the sets of Colors’ popular show Madhubala Ek Ishq Ek Junoon came as a shocker to the channel and production house. Says a reliable source from the sets of the Nautanki Telefilms show, “Nanveet has been extremely unprofessional on the sets. She has in fact walked out of the set twice last week because she found her dialogues difficult to mouth. The actress cannot shoot beyond 7 because of alcohol problems. And today was the worst experience ever, as she left the shoot this morning saying that she does not like the faces of technicians. Her consensus is that the whole set of Madhubala has negative vibes.” The makers are presently placed at a mess as they have not shot the entire sequence to be aired today. She was requested by the channel and makers to quit the show on a professional manner so that her proper exit could be planned. But the lady has not given any room for that with her recent unprofessional behaviour, claims our source. We tried contacting Navneet Nishan, but she remained unavailable for comments. The news doing rounds is that veteran actress Gopi Desi and Seema Kapoor are few of the names who have been approached to play Paddo Massi in Madhubala. Our efforts to get to Producer Saurabh Tewari were in vain.