Disk usage discrepancy?

If you have errors related to filewalkers, it’s an issue with not enough IOPS. This can be fixed either by optimizing the filesystem or by disabling the lazy mode and, perhaps, enabling the experimental badger feature to cache a filesystem metadata, see Badger cache: are we ready?

Could you please elaborate, what do you expect to be fixed in the next version?
There are many fixes, see Release preparation v1.110.