It was the beginning of a campaign that focused largely on the perception of Facebook, not the reality of its flaws. The company said Sandberg took this approach, however unsatisfying, because world leaders were interested in hearing from people in power at Facebook, and it seemed better than not showing up. But The New York Times detailed how Sandberg’s side of the organization obfuscated and denied problems. That included hiring a firm that helped Facebook smear critics behind the scenes, in part by linking a Facebook protest group to the billionaire George Soros, who is often the subject of anti-Semitic conspiracy theories.

“I want to be clear that I oversee our comms team and take full responsibility for their work and the PR firms who work with us,” Sandberg said in a memo to employees last week. “I also want to emphasize that it was never anyone’s intention to play into an anti-Semitic narrative against Mr. Soros or anyone else.”

Sandberg has at times focused on her own priorities over Facebook’s, the current and former employees also said. The COO is proactive when thinking about interpersonal relationships and messaging campaigns. Each winter, before the World Economic Forum in Davos, Switzerland, her team prepares a binder of all the people she might meet and what they might ask her. She uses this tactic throughout the year. But that kind of analysis — of what might occur before it happens — wasn’t as thoroughly applied to assessing risks to Facebook and how the company might be run differently, the employees said.

Around the same time Sandberg made the trip to D.C. in October 2017, Facebook and the broader technology industry were preparing for a battle over an important piece of legislation. The bill, meant to address child sex trafficking, also increased internet companies’ liability for content users posted on their services. Facebook’s policy team argued against the law. But then Sandberg got involved. After she was personally lobbied by women in Washington, she decided Facebook should support the legislation, according to people familiar with the matter. The surprise shift crippled the industry’s united front, and the bill passed.

The episode prompted questions among some Facebook staff over whether Sandberg was putting her own politics and relationships ahead of what was best for the company, according to two of the people. Facebook confirmed Sandberg led support for the bill, but a company spokeswoman said the COO “made the call because it was consistent with the company’s values.”

Sandberg has also suffered from a weakness that has affected other powerful corporate executives, according to the employees who spoke with Bloomberg. She surrounded herself with trusted lieutenants who protected her from criticism and bad news, potentially slowing her response to growing crises, they said. And she protects them in return.

Elliot Schrage, Facebook’s head of communications and policy, is an example. He worked with Sandberg when she helped build Google’s advertising business, then moved with her to Facebook in 2008. Schrage wrote a note to employees last week to take responsibility for hiring the Republican crisis communications firm, Definers, that conducted opposition research against Soros and others. Facebook leaked the memo to take pressure off Sandberg, according to a person familiar with the situation.

In 2011, Sandberg hired Joel Kaplan as a vice president of public policy. The two had been close at Harvard. Kaplan has come under fire within the company for his close friendship and public support of Supreme Court Justice Brett Kavanaugh at a time when Facebook is being accused of political bias. But Kaplan will not face consequences, the people said.

Sandberg’s favorites are known by the term FOS, for “Friend of Sheryl,” and several have been promoted to powerful positions at the company, according to four people familiar with the situation. But there’s been little incentive for these advisers to tell her negative things because she often criticizes people harshly and sometimes ousts them from her close circle when they disappoint her, the people said.  “She’s so brutal to people, no one wants to bring her anything,” one of the people added.

Sandberg seems to realize she needs to create a new culture where people feel more comfortable telling her about Facebook’s problems. One of her biggest regrets this year, she has told friends and colleagues, is that the company took too long to respond to the unfolding crisis over Cambridge Analytica, the consulting firm that obtained data on Facebook users without their consent. The revelations emerged in March, but Sandberg and Zuckerberg waited several days before addressing it publicly.