The vortex lingered for a moment before slowly fading away, and it did not appear again, presumably having left.
To Obito, who possessed space-time Ninjutsu, the barrier was as good as useless; even Black Zetsu was only temporarily trapped.
There were many ways to breach a barrier. For instance, when Pain attacked Konoha in the original story, he used the Human Path to break through Konoha's barrier.
Chapter 262