Joshi's statement comes after reports that the producers of "Padmavati" -- mired in controversy over allegations that it distorts history -- held a special screening for a few journalists.
A day after the CBFC sent Sanjay Leela Bhansali's film back because the application for the certification was "incomplete", Joshi said he was "disappointed" that it was being screened for the media and getting reviewed on national channels without CBFC having seen or certified it.
"On one hand, holding the CBFC responsible and pressurising to accelerate the process and on the other hand, attempt to subvert the very process, sets an opportunistic precedent," he added.
He reiterated that the application for certification for the film sent by the makers was incomplete and said the Censor Board had informed them about it.
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In this specific case, Joshi added, the film's application came up this week only for review.
He deplored the use of "convenient, casual methods" and said there should be "a responsible, mutually respectful and balanced approach".
Ajit Andhare, COO, Viacom 18 Motion Pictures, which has produced the film, yesterday told PTI that the issue with the application was "minor" and the CBFC could have screened the film.
The lavishly mounted period film, which centres around the Rajput queen Padmavati, is scheduled to be released on December 1.
While various Rajput groups and other have been protesting across the country, the film fraternity has come together to back the project starring Deepika Padukone, Ranveer Singh and Shahid Kapoor.
Both Deepika and Bhansali have received threats.