I created a lower third title for each of the speakers in my interviews. It's a white rectangle with our church logo on the left, and the speaker's name after the logo. I decided to create the whole title in it's own timeline, so then, in the final edit of the interview I'm doing it's a nested timeline. When I play back, the white title shows repeated pink flashes, like an error or artifact in the editing. I thought it might be that it needed to be rendered, but then even after I exported the final video, the pink flash artifacts were still there. Any idea why this would happen? I also tried slowing down the render speed to "1" but I still got the pink flashes.