I am unable to replicate.
MMA pro Moto X4 (TRacks are on phone)
Kodi on PC Win 10 1909
Nexus Player (Android TV 8.1) and MMA Pro on Nexus (Tracks are from MM5 on PC)
I know it sounds stupid, so I am either incapable to replicate (as playlist of 10 tracks play without any issue no matter I try) or I got some steps wrong ?