Headset Volume gets very loud in the beginning when starting a song

[NWuensche]

So I have this issue for the stock version of Eleven on LineageOS 14.1, as well as for this repo.

When I start the app and plug headphones in, I sometimes get a very high volume peak in the beginning of the playback. It's there for a fraction of a second, and then playback gets back to normal volume.
This happens sometimes when I skip to the next/previous song or when I press on the play/pause button really fast.
I even tried to change MultiPlayer.setVolume in MusicPlaybackService to:

public void setVolume(final float vol) {
            mCurrentMediaPlayer.setVolume(0f, 0f);
}

When doing this, the music is silent for most of the time, but I still get these peaks. I even tried turning of the volume of the music volume bar, as well as turning my device into "do not distract me"-mode. However, I still get these high volume peaks.
My phone is the Moto G2 (thea) with Lineage 14.1.

Is this a bug in Android or really just in Eleven? I tried the same procedure in VLC, but there I don't get this problem.