setPlayHead not working

[jfbloom22]

When I call setPlayHead with percentage 0, I am expecting it to go back to the beginning. However nothing happens.
dispatch(actions.setPlayHead(id, 0));

When I call it with .1 it goes back to the beginning, but only one time. Additional dispatches do not set the playhead back to the beginning.
dispatch(actions.setPlayHead(id, .1));

In fact any value I try to set the play head too only works once.
dispatch(actions.setPlayHead(id, 50)); seeks to the middle of the track, but only the first time I dispatch it.

[MartinDawson]

probably a bug