TestSceneGameplaySamplePlayback
See: https://github.com/ppy/osu/actions/runs/15924307907/job/44920278903 Similar null-checks within `Update()` are present in the `PlayerTestScene` superclass.
https://github.com/smoogipoo/osu/actions/runs/9986761756/job/27599851263 This is a bit of a workaround, likely timing related. I don't foresee an until step in this case to cause false-passes.
IsCatchingUp
ISamplePlaybackDisabler