Bug: disable autoscroll while playing does not work

Summary

Unable to disable playhead tracking during playback.

STEPS TO REPRODUCE

Go to settings -> Timeline
Uncheck "autoscroll while playing"
Go to the timeline, zoom in so that the entire project does not fit into the area being viewed and click play.

OBSERVED RESULT

The viewport is moved beyond the playhead.

EXPECTED RESULT

The viewport must not follow the playhead.