Double click marker in list to locate playhead to it.
Either enter a new playhead time in the lower left of the waveform window or scrub to change the time.
The playhead can be seen to be moving but the window does not scroll to keep the playhead visible.
Even starting playback doesn't force the window to scroll to the playhead. It is necessary to press left/right buttons to force a small playhead position change and them BOOM the window scrolls as expected.
This has been broken for quite a while. I'm using 18.104.22.168 on macOS.