If you were trying to post a news story on Facebook on Tuesday, chances were the platform might have stopped you.

The social network had a bug in an anti-spam system that was incorrectly flagging users' posts as spam. Facebook's vice president of integrity Guy Rosen explained the issue over tweet Tuesday night and Facebook CEO Mark Zuckerberg confirmed it on Wednesday in a call with media.

Zuckerberg said that the incident on Tuesday was widespread and it was not related to coronavirus links – as previously reported – or its human moderators working from home.

The issue has been fixed, Zuckerberg said, and Facebook is doing post mortem. "Hopefully we won't have that issue again anytime soon."

Continuing on content moderation, the CEO added: "I do think there will be some false positives, (and we'll) take down some content that was not supposed to be taken down. We try very hard not to do that of course, but I don't think you should expect to see anything of the level of the bug yesterday."

On Monday, Facebook posted an update to its corporate site on how the social platform is handling content moderation.

"With fewer people available for human review we’ll continue to prioritize imminent harm and increase our reliance on proactive detection in other areas to remove violating content. We don’t expect this to impact people using our platform in any noticeable way," the update read. Zuckerberg said on a call on Wednesday that the bug from the day prior was a completely separate system on spam.

YouTube is relying on AI to moderate

Similarly, YouTube warned its creators that video removals may increase during the COVID-19 pandemic – relying mostly on technology, not human moderation, to do the job of removing misinformation.

"If creators think that their content was removed in error, they can appeal the decision and our teams will take a look," YouTube explained. "We’ll also be more cautious about what content gets promoted, including livestreams. In some cases, unreviewed content may not be available via search, on the homepage, or in recommendations.

Facebook, along with six other tech companies, also released a joint statement on Monday requesting for others in the industry to help in the fight against misinformation about COVID-19.

"We're helping millions of people stay connected while jointly combating fraud and misinformation about the virus, elevating authoritative content on our platforms, and sharing critical updates in coordination with government health care agencies around the world. We invite other companies to join us as we work to keep our communities healthy and safe," the statement read.

Follow Josh Rivera on Twitter: @Josh1Rivera