- If AutoPlay is disabled and the player is paused/stopped on exit, the playlist is resumed, the position is restored and the player stays in stop mode.
- If AutoPlay is enabled and the player is paused/stopped on exit, the playlist is resumed, the position is restored and the player starts in stop mode. However, minutes or moments later (depending on the "Wait AutoPlay" setting), AutoPlay may detect there should be something played and enqueues as new song.
However, maybe your issue is also more complicated ...

Best regards,
Björn