Background-audio does only work for 8 pages

[Refurb]

What's the issue?

I'm using background-audio in Google AMP Story, it's doing fine in the first 8 pages. But from page 9 it doesn't work anymore.

How do we reproduce the issue?

Create 9 pages, all with background-audio

What browsers are affected?

All

Which AMP version is affected?

1523662348051

Note

Is there any other thing I can do? Looks like amp-audio doesn't work too. I was using AMP for a school project and I need audio with all pages. Thanks in advance.

[newmuis]

Thanks for the report @Refurb! To clarify, are you using the background-audio attribute on the <amp-story> element? Or on multiple different <amp-story-page> elements?

[Refurb]

Multiple amp-story-pages. All different mp3's. And from amp-story-page #9 the mp3's stop working. Any idea? :-)

[newmuis]

This seems like a duplicate of #13476; I will migrate the conversation there.