I have no specific comment (it has been eighteen years since I worked as a closed-captioner, and even then, I was never really involved with the technical side of things)... other to say that this article could have been a three-sentence blurb instead.
"An episode of 'Love Island U.K.' featuring a performance by singer Rita Ora was pulled from Hulu after being briefly available on Sunday. Although there was some speculation that the withdrawal was due to licensing issues, representatives for the streamer confirmed that it was due to the episode's closed-captioning not working properly. The episode has now returned to the service."