Production staff on award-winning Amason show Transparent are reportedly 'up in arms' at having to use trans-friendly bathrooms.

Sources tell TMZ that members of the crew are unhappy at having to share unisex lavatories.

The portable bathrooms situated on the site have both male and female signs on the door - as well as a symbol commonly used for 'all-genders'.

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Trouble on set? Production staff on award-winning Transparent are reportedly 'up in arms' at having to use trans-friendly bathrooms

Tension: The bathrooms used by the crew have both male and female signs on the door - as well as a symbol commonly used for 'all-genders' - allegedly angering some members of the crew

It has been claimed that staffers on the Amazon hit - which focuses on the journey of an elderly trans woman - have been left riled by the decision, but feel they are unable to complain over fears they will be branded 'transphobic'.

This would obviously be frowned upon on a show which focuses on the lead character's sex change journey.

Jeffrey Tambor plays plays a retired college professor called Morton Pfefferman, whose gender affirmation as Maura shocks her family.

Judith Light, Gaby Hoffmann, Jay Duplass, and Amy Landecker also star on the favourite, which returns later this year.

Online hit: The show focuses on trans professor Morton Pfefferman (played by Jeffrey Tambor, above), whose decision to live as a woman shocks his family

Angered: It has been claimed that staffers on the hit have been left riled by the decision to have unisex toilets, but feel they are unable to complain over fears they will be branded 'transphobic'

Not a pretty sight: It has been suggested that female staffers are particularly disapproving of having urinals in the shared bathrooms

Tambor, who picked up a Golden Globe after the first series, recently insisted the fact it had been renewed for a third time showed the world was a different place.

'The world has changed,' declared the seven-time Emmy nominee, 'And that's a good thing.'

Tambor explained he had been praised by Caitlyn Jenner, with the two-time Olympic gold medalist's eight-episode docuseries I Am Cait - chronicling her life as a transgender woman -also now in its second series.

Tambor said that, ultimately, authenticity meant more to him than critical acclaim.

'It's not about getting a good review. It's not about getting, "Oh, you're the most believable." You have to do it right. Your representation matters,' Jeffrey explained to Today's Jenna Bush Hager.