Professional :: MouseEvent Triggered GotoAndPlay Missing Frames?

I am using a mouseEvent listener
 
iBubble1.addEventListener("click",doStuff);
 
to call a function that uses gotoAndPlay to send the playback head to a certain animation on the timeline.
 
function doStuff(evt:Event):void {
gotoAndPlay("popped");
}
 
Should be so simple. But the first frame of the "popped' animation, often the first 2, do not display. (when testing the compiled app, even the first 3-4 frames often do not display)Without the mouse event listener, using gotoAndPlay("popped"); to move the playback head to this animation from another spot in the timeline works just fine, so that's why I suspect the mouse event is involved in the bug.using

trace(currentFrame);

in the function after gotoAndPlay, does trace the correct first frame number of the animation, but this frame is not displayed, the animation just starts with the 2nd frame, or 3rd..or sometimes 4th.