Reports say that soap bosses were angered after photos of the rebuilt and refurbished Rovers Return were posted on Twitter.
One photo showed actor Tony Hirst in the corner of the pub, spoiling a current storyline about whether or not his character Paul will leave Weatherfield.
The pictures - leaked by Simon Gregson (Steve McDonald) and props buyer Peter Eccleston - have prompted Corrie's bosses to send a memo to cast and crew banning the use of mobiles on set.
A Coronation Street source said to The Sun: "The Twitter stuff has been getting out of hand recently, with people posting all kinds of photos which could be detrimental to the show.
"The bosses would rather people didn't know what the Rovers looks like ahead of time, and these snaps clearly blew that."
Naughty friends at work I give it 3 minutes before we're told off twitter.com/simongregson12…— simon gregson (@simongregson123) April 16, 2013
Gregson posted the first picture of the new Rovers showing co-stars Kym Lomas (Michelle Connor), Craig Charles (Lloyd Mullaney) and Alison King (Carla Connor) joking around and eating peanuts. Sensing he might be in trouble, Gregson wrote alongside the photo: "Naughty friends at work I give it 3 minutes before we're told off."
The behind-the-scenes picture, which revealed the pub's new burgundy and cream interior, also showed character Paul at a table in the background. Viewers have seen the troubled fireman question his future in Weatherfield after splitting from love Eileen Grimshaw (Sue Cleaver) in episodes last week.
A Coronation Street spokesman said: "Mobile phones are not allowed on set as part of general studio protocol. The memo that mentioned this was not prompted by a specific incident."
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