They had already rejected Russia’s amendments, before the vote.
From the article:
“Before the vote on the resolution sponsored by Brazil, council members rejected two Russian amendments, one calling for a “humanitarian cease-fire” and the other condemning indiscriminate attacks on civilians and “civilian objects” in Gaza, which include hospitals and schools.”
However, I think it was prudent not to rush into these resolutions.
Maybe this was the poison pill.
“The draft resolution also urged Israel - without naming it - to rescind its order for civilians and U.N. staff in Gaza to move to the south of the Palestinian enclave and condemns “the terrorist attacks by Hamas.”