Play button on timelines causes playhead to go back to beginning every time

This is happening to me too.  I can place the playback head where I want it, then when I click the play button, the playback head always jumps back to the beginning and plays forward.  I have been using SL for many years... this just started with the latest build.  I time animations to the voice-over and this is a huge time drain.  I have to say that rebuilding the screens isn't really an option.  I know Articulate can get to the bottom of this!  Thanks!!