There is a drop-down list of requesters in Assets module, it is possible to assign device for different users (requesters).

Our requesters are imported from AD, they have Name and Surname, starting letter is upper case. When we try to search requester in the drop-down list by his surname, it fails, no matter search using uppercase or lowercase first character. 

But it search normally if we just EXCLUDE first character from search string. 

For example, requester name is Nancy Darwin

Search fails by strings - Nancy, nancy, Darwin, darwin

Search successes by strings - ancy, arwin

But our SDP language is russian, it's just an english example for understanding.

It happens in drop-down list of requesters in editing form of asset.