There were a few frustrating things involved with it.
First, Tav needing five touches to then decide to pass it back to defence from the edge of their box. Then, worse, Goldson set up to pass it back to Tav, but needing five touches to do so and, in the end, deciding to give it back to McGregor since the Rapid players have closed him down in the time it took him to think. Finally, McGregor wasn't ready and nearly got closed down too, so had to rush.
It was 10 seconds of all-round panic, wanting too much time on the ball, and a concentration lapse.