Creating entries in Users and Groups menu in Studio cause Studio Project deployment impossible

Steps to reproduce :

• Go to Users and Groups menu in Studio and create a user entry
• Hot deploy the project

The studio project isn't deployed. If the project was previously deployed, it is removed. If I disable Users & Groups definition in Studio, it works

In server.log :

======================================================================
= Component Loading Status: Pending: 1 / Missing: 0 / Unstarted: 0 / Total: 646
  * service:studio.extensions.gcarlin-SANDBOX requires [service:org.nuxeo.ecm.directory.sql.storage]
======================================================================

=> Reproduced with H2 => in this case this is a blocker
=> Reproduced with Redis and Mongo => in this case this is consistent until NXS-4071 is tackled