PopUp Problems on Amazon Fire Devices

I use a lot of PopUps in my mobile app.  They work great on iOS, Android, and Amazon Fire devices, but the don't POSITION themselves correctly on Amazon Fire devices.

noInvitePopUp = PopUpManager.createPopUp(this, NoInvitePopUp, true) as NoInvitePopUp;
PopUpManager.centerPopUp(noInvitePopUp);

This code should create a popup that is centered horizontally and vertically inside of the component that created it.  It works on iOS and Android, but on Amazon Fire, it centers horizontally, but vertically it positions flush to the top of the component that created it.  Has anyone experienced this, and do you have any tips to take care of this?  Do I need to post a bug report??