A user is able to view document fields that are managed using Field Dependency rules in Vault.
This is working as designed. Lifecycle Field Dependency rules override all other Field Dependency rules when they are assessed together on a document.
The option that applies to every other document field overrides all other Field Dependency rules. This occurs for the affected field for users in the affected lifecycle role and documents in the affected lifecycle state.
The solution is to set up individual Field Dependency rules per field within the affected lifecycle Field Dependency rule. This is done rather than using the option that applies to every other document field.
Vault Field Documentation: Managing Dependent Fields
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