Citrix Workspace App delays in adding the Store and enumerating resources when done manually or using a policy. This can also be seen with SSON being used with CWA.

Caution! Using Registry Editor incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.

The issue can be fixed by adding the below registry key in CWA for Windows 2203 Cu4 or 2303 and higher - 

Path : HKEY_LOCAL_MACHINE/Software/wow6432node/Citrix/Receiver
Name: SkipStoreCertificateRevocationCheck
Type: DWORD
Value: 1

Or

HKEY_CURRENT_USER/Software/Citrix/Receiver
Name: SkipStoreCertificateRevocationCheck
Type: DWORD
Value: 1

Refer : https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/2203-1-ltsr/whats-new/fixed-issues.html#sessionconnection

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Problem Cause

Store certificate might have multiple CRL issuers which are not reachable resulting in delay when adding store and enumeration.

https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/about.html#fixed-issues-1