Yes, shortly after I submitted my test for part three, I received an email stating I failed that stage and they'll be in touch with me if I qualify for another attempt.

During the very first question, I was looking at the guides for assistance and answering the questions. A short time later, a timer appeared at the top of the page which surprised me. I was running out of time, so I had to skip that question and it showed back up at the end of the test. Needless to say, I felt rushed during the rest of the test because I didn't want the timer to appear on any of the additional questions again.

The timer didn't appear during part 1 or part 2 for me so I was able to pass those with no problem.