Unable to refresh tenant index and get new chart versions

[titus-chu-kmon]

Hello,
I'm using multitenancy and alibaba OSS bucket as backend. My CM is not able to refresh the index of a tenant if a chart name's prefix at the root level is the same as the name of the tenant.

For example, in the bucket i have

/abc-def-1.1.1.tgz
...
/abc-def-1.1.24.tgz
/abc/xyz-1.1.1.tgz

If I uploaded a new chart

/abc/xyz-1.1.2.tgz

then my helm client can't see this new version because CM keeps failing to refresh abc index.

{"L":"INFO","T":"2024-12-02T07:51:12.661Z","M":"Rebuilding index for tenant","repo":"abc"}
...
{"L":"DEBUG","T":"2024-12-02T07:51:12.661Z","M":"Entry found in cache store","repo":"abc"}
{"L":"DEBUG","T":"2024-12-02T07:51:12.661Z","M":"Fetching chart list from storage","repo":"abc"}
{"L":"DEBUG","T":"2024-12-02T07:51:12.676Z","M":"Change detected between cache and storage","repo":"abc"}
{"L":"DEBUG","T":"2024-12-02T07:51:12.676Z","M":"Regenerating index.yaml","repo":"abc"}
{"L":"DEBUG","T":"2024-12-02T07:51:12.676Z","M":"Loading charts packages from storage (this could take awhile)","repo":"abc","total":24}
{"L":"ERROR","T":"2024-12-02T07:51:12.680Z","M":"oss: service returned error: StatusCode=404, ErrorCode=NoSuchKey, ErrorMessage=\"The specified key does not exist.\", RequestId=674D66F04E22F83137933220","repo":"abc"}

From my istio proxy, I can see it's trying to get charts abc-def inside the abc tenant.
And i think it's because of this line

chartmuseum/pkg/chartmuseum/server/multitenant/cache.go

Line 201 in 8795e99

allObjects, err := server.StorageBackend.ListObjects(repo)

Is there suppose to be a / at the end? Not sure how it would affect the other backend suppliers

Thanks in advance!