Private module version uploaded in GNU tar format is not parsed


I’m able to successfully publish new versions of modules to our private module registry in Terraform Cloud, but all the details pages ( Readme, Inputs, Output, Resources, …) are empty on HCP Terraform for the most recent versions.

The gzip tarballs are built using the GNU format, that’s a constraint of my pipeline tooling.
They are built in GNU tar format since the beginning.
Was there a recent change on HCP Terraform that removes the support of GNU tar archives?