Audio envelope not working in share mp4

I am using the new audio envelope points to control audio volume manually - great feature. However, when I export the slide show as a custom size mp4 H.264 video the audio volume is not adjusted at all at the envelope areas (auto fade in/out is correct). I really hope this is fixed in the final version.

Hi Darryl, I am unable to reproduce this here. Is it possible you upload a slideshow that shows this on export to e.g. and email me over at so I can take a closer look?