Senior officials in the Food and Drug Administration’s tobacco center were blindsided by a recent decision that opens the door to allowing more unauthorized electronic cigarettes and nicotine pouches onto the U.S. market, The Associated Press has learned.The guidelines, posted days before former FDA Commissioner Marty Makary resigned, will allow companies to launch certain nicotine-based products before they’ve been fully vetted by regulators. Some FDA officials tasked with enforcing vaping regulations were not consulted on the changes and only learned of them the night before the document was published earlier this month, according to two staffers who spoke to the…