There are no error messages. Here is image from Veritas lab showing two cases. In between the "FF" and "Test" for one of the cases is a Non-Breaking Space character, and for the other there is a space in between.

and if type "FF " in the search bar the case with the Non-Breaking Space character will disappear as such:

Special character (Non-Breaking Space) within the case name.
The current work around for this issue requires database changes. Therefore, it's recommended to backup the system or use Clearwell Utility Option 1 to perform a node backup and then create a new Veritas Support Case referencing this technote for solution.
This issue is currently under investigation by Veritas Technologies LLC. Pending the outcome of the investigation, this issue may be resolved by way of a patch or hotfix in current or future revisions of the software. However, this particular issue is not currently scheduled for any release. If you feel this issue has a direct business impact for you and your continued use of the product, please contact your Veritas Sales representative or the Veritas Sales group to discuss these concerns.