She was fired before 12 forever aired for alleged sexual misconduct against her coworkers. Not for the pedo shit. I don't think Puny or Cartel were aware of the tumblr post.
Nevertheless, someone leaked the court documents of the lawsuit of the two who are accusing julia. (whose names have been censored/redacted by the poster in the copies I could find.) The lawsuit is actually against Puny, who was hired in partnership with Cartel to form a limited production company called "TFE" to produce "twelve forever." The two people (again, unnamed as far as I can find) who allege of the misconduct are suing Puny because they claim they informed Puny of Julia's misconduct outside of the work office and didn't do anything.
Netflix quietly axed julia after they found out about this lawsuit before the show aired. The lawsuit is two people against half of the TFE production company. the two "defendants" said puny did nothing when they told them julia was being inappropriate outside the work offices.
I hope this clears up some shit because there's a lot of gossip going around without any substantive evidence.