Loki Index Gateway cached indexes size are incorrect

Index Gateway downloads indexes from S3 index/chunk store and the file size are incorrect.

See below snippets from both S3 and Index Gateway:

From s3:
/index
Total number of objects
8
Total size
950.4 MB

loki_index_18919/ | Folder | - | 163.0 MB | 1 | -
loki_index_18920/ | Folder | - | 134.7 MB | 1 | -
loki_index_18921/ | Folder | - | 170.5 MB | 1 | -
loki_index_18922/ | Folder | - | 136.1 MB | 1 | -
loki_index_18923/ | Folder | - | 15.5 MB | 1 | -
loki_index_18924/ | Folder | - | 17.5 MB | 1 | -
loki_index_18925/ | Folder | - | 128.0 MB | 1 | -
loki_index_18926/ | Folder | - | 185.0 MB | 1 | -

From Loki Index Gateway:
/ ls -alh /var/loki/cache/*
/var/loki/cache/loki_index_18919:
total 698M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:22 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 697.9M Oct 26 23:22 compactor-1634795930.gz

/var/loki/cache/loki_index_18920:
total 580M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:22 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 580.3M Oct 26 23:23 compactor-1634860819.gz

/var/loki/cache/loki_index_18921:
total 732M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:23 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 731.8M Oct 26 23:23 compactor-1634947283.gz

/var/loki/cache/loki_index_18922:
total 588M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:23 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 588.0M Oct 26 23:23 compactor-1635033672.gz

/var/loki/cache/loki_index_18923:
total 86M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:23 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 86.1M Oct 26 23:23 compactor-1635199315.gz

/var/loki/cache/loki_index_18924:
total 95M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:23 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 95.2M Oct 26 23:23 compactor-1635207093.gz

/var/loki/cache/loki_index_18925:
total 550M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:53 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 550.0M Oct 26 23:53 compactor-1635292274.gz

/var/loki/cache/loki_index_18926:
total 792M
drwxr-sr-x 2 loki loki 4.0K Oct 26 23:53 .
drwxr-sr-x 10 loki loki 4.0K Oct 26 23:23 …
-rw-r–r-- 1 loki loki 791.9M Oct 26 23:53 compactor-1635292278.gz

My Config:

boltdb_shipper:
shared_store: aws
active_index_directory: /var/loki/index
cache_location: /var/loki/cache
cache_ttl: 24h
resync_interval: 5m
query_ready_num_days: 7
{{- if .Values.indexGateway.enabled }}
index_gateway_client:
  server_address: {{ include "loki.indexGatewayFullname" . }}:9095
{{- end }}