ABP Zero 8.4 development notes ---- User Delegation

In the most recent developments in the ABP Zero latest development version 8.4, a new version of ABP Zero found an increase in the "User Delegation" this feature. ABP Zero team stressed that this is actually the main function a user can grant other users of the same Tenant operate using their own identity. The authorization process can specify the validity period of the authorization. In my opinion, this function than the previous "Link Account" function to restrict an authorization more time. There is little to enhance the functionality it. But it also poses a problem, that is, before version 8.4, Host administrator can Tenant is in the "Log as this tenant" Log on as a user in the Tenant. In version 8.4, if not closed "User Delegation" in the system "UserDelegationConfiguration.cs" can no longer use the "Log as This tenant" function. Since "User Delegation" feature can be authorized under the same Tenant between the users, is inserted in the database unless "[AppUserDelegations]" authorization data is a data table. Otherwise it is no longer available in the Host administrator instead of the user identity to log on to the Tenant Tenant environment.