I´m using Greenbone Community Containers and I recently got " TypeError: item2.value.toLowerCase is not a function" trying to create a new group.
Trying to solve this issue, I realized that it is related to the use of users with login names made up of only numbers. And the error only happens with gsa image versions 24.0.0 and newer.
My current workaround to this issue is the use of gsa:23.3.0, since we need to use users with numeric log names provided by an LDAP server.
Could you please describe step by step how to safely reproduce your issue? If I get a description to reproduce the issue reliably we can fix it easily. Maybe also just add some screenshots.