Sorting by artist not working / saving

[moeismu]

Plan

Premium

Country

Indonesia

Device

Redmi Note 5 Pro

Operating System

Android Pie (9)

My Question or Issue

Hello spotify forum,

I'm a long time spotify subscriber. But recently (2-3 months ago) the app on mobile is really annoyed. As the title said, sorting by artist not working/saving. 

I usually sort my playlist by artist, so the order is sort by the artist name (alphabetically a-z) and then sort by the album name (also alphabetically a-z). For example this is my playlist on desktop. Image: https://i.imgur.com/ABo1Fa1.png. As you can see, if sorted by artist, it's going to sort by artist name and then sort by album name (all a to z).

In mobile app, sort by artist it's not working. But if i sort the playlist by other order (recently added, album, etc.), it does save. For example, this is sort by artist, but the order somehow not like the desktop version. Image: https://i.imgur.com/4RDNTnW.png. As you can see, the order is messed up. I can still sort it by artist by doing sort by other order and sort by artist. But then, if i pressed back (to other menu/playlist), it back like the screenshot, not sorted by artist anymore.

I already clear data, give access to storage, reinstall the app, and antoher troubleshoot it doesn't work. I make sure i didnt have shuffle play on, or anthing that make the order messed up. I don't know what to do anymore. Please help.