The vote was to delay implementation of the act to allow for further discussion.

Because it is a “proposition de rejet”.

• 🟢 🟩 Green means AGAINST Chat Control 🟢 🟩

• 🔴 🟥 Red means FOR Chat Control 🔴 🟥

It's deliberately vague, even the politicians found it confusing.

From HERE

"It is a temporary exception that lets U.S. tech firms scan direct messages on services such as Instagram, Discord, Snapchat, Gmail and iCloud without a warrant or prior suspicion."

It basically allows any company to scan and read any of your messages if they are able to.

• https://www.politico.eu/article/child-abuse-bill-tweaked-by-parliament-sent-back-to-council/

Because of the unusual procedure, voting in Strasbourg was confused and chaotic. One member told Parliament Vice President Sophie Wilmès: "We don't know what we are voting on."

The vote means member countries must now decide whether to accept the Parliament's changes. If they do not, and propose a different version, the law will go to a dreaded "conciliation" procedure. That procedure was used earlier this year to pass a long-stalled law on air passengers’ rights but, other than that, has not been used since 2013.