Voice does not take into account .m3u8 index file (japanese audio book)

[dmist]

Overview

I imported japanese audiobooks, each folder contains 1 audio book divided in chapters / sub parts, and everything is indexed in a .m3u8 file. Thus by reading the index we know the order of reading, even if the chapters / subparts are not alphabetically ordered (especially because it is in Japanese).
However Voice doesn't seem to take this into account, therefore the content appears out of order. I don't want to rename everything in alphabetical order.
I think that voice should be able to read and index following the .m3u8 file information.

How to reproduce

Importing the Japanese audio files.

Version

8.1.3

Android Version

34

Device Model

SM-S9180