Docker manifest missing layer size

The manifests of all our recently built/pushed images have some layers with missing size attributes (see attachment). We checked the referred files in the blob-storage, they are all present and have a size > 0. Older manifests (1 year+) in our repository all have each layer with a size attribute.

Why is this an issue?
The datacenter we have to host our application runs automatic scans on our images (aqua/trivy) and those fail because the layers without size information can not be verified.

We can’t find out why this is happening so any help or information where to look at would be appreciated.

Sonatype Nexus Repository Manager OSS 3.42.0-01
Docker Engine - Community 23.0.1