The vendor has published 2 unique mention(s) for this bug: 1. You might not be able to sign in to Web Studio as an administrator when an FQDN contains regex-interpretable characters. 2. When you attempt to log in to WebStudio, you might see an error caused by invalid tokens when domain names contain special characters. Latest urls for this bug: 1. https://docs.citrix.com/us/en/citrix-virtual-apps-desktops/2402-ltsr/whats-new/cumulative-update-4/fixed-issues.html 2. https://docs.citrix.com/us/en/citrix-virtual-apps-desktops/2507-ltsr/whats-new/cumulative-update-1/fixed-issues.html