Testing the ReplayViewer in 1.15.2.

I was manually entering the Timeline Position of a time keyframe, but accidentally set it to more than 30 minutes without realising. I then clicked off it and made a new keyframe. The UI correctly showed a red bar as my new keyframe was at a previous time index, but I am now unable to get to the incorrect time keyframe to edit or remove it as it's now past the 30 minutes on the timeline.

For anybody else who has the same issue, I was able to resolve it by editing the timelines.json file associated with the replay and manually deleting the erroneous keyframe.