Since version 4.0.1, it seems that after scavenging, all chunks still have a size of 268439552 , even when scavenging reports that some space has been saved.
Some space can actually only be freed when chunks are merged. In this case, the resulting chunk still has a size of 268439552 , but other chunks are deleted.
Previous version generated smaller chunks when space was reported as saved, actually saving space.
Is it intended or is it a regression ?