/data partition changed itself from f2fs to ext4. What happened?

[redsmith]

I clean flashed Open Beta 9, and suddenly /data partition is reported as ext4.

Only things I've flashed are Magisk 13, some modules (more volume steps, SELinux display), and finally Arise Magnum Opus (main suspect for now, noticed the change in filesystem after installing Core and Dolby Atmos, can't make sure this is the culprit though).

What happened here? Can I get f2fs back without wiping everything?

 

[redsmith]

Ok, spoke too soon. TWRP is reporting data as being f2fs, but DevCheck reports the partition as ext4. Which one is right?

 

[GR0S]

Try checking it manually, adb shell mount

 

[redsmith]

Try checking it manually, adb shell mount

Thanks, userdata is reported as f2fs.