Function App: Deployment fails during package staging with storage access issues

Problem description

I am experiencing deployment failures with my Function App during the initial package staging phase. The deployments are failing before the remote build starts, with errors indicating inaccessible storage. Despite reproducing the issue with different network configurations and restoring storage settings afterward, the problem persists. I need assistance understanding why the deployment cannot access the private storage endpoint and how to configure my environment for successful private endpoint-only storage access during deployment.

Environment

Azure Function App, deployed in a private network with Blob storage using a private endpoint, located in the specified region.

What I've already tried

I have reproduced the issue with storage access enabled, route-all disabled, and VNet integration detached. After testing, I restored the storage and networking settings to their original configurations. I have also checked the deployment process and storage settings but have not yet obtained logs confirming whether the upload reached Blob storage during the failure window.

Current status

I am seeking guidance on how to configure my Function App deployment to work with private-only storage endpoints and to understand the cause of the current access failures during package staging.