Music app - Lockscreen album art setting unchecked but enable

Hi, my phone is a OnePlus One 64 GB with latest system version (Jan/09/2019)

Summary

By default, in music app, the "Lockscreen album art" setting is normally unchecked, but the album art appears on my lock screen.

Steps to reproduce

Just start a music, and lock then unlock your phone.

What is the current behavior?

I need to check and uncheck the setting, but if I restart my phone (or sometimes when I just close the music app) I need to re-do the check-uncheck manipulation.

What is the expected correct behavior?

By default the "Lockscreen album art" setting unchecked and so disable.

Relevant logs and/or screenshots

If you need a screen record, ask me and I'll upload it on YouTube.

Possible fixes

No idea :/