UE4.4 Editor - Perforce Connection Problem with KoreanUsername

I’using UE4.4 with perforce stream depot.

when I try to get avalible workspace-list with Korean-Username, it rejected. but with English-Username. it’s ok. well done.
In PerforceConnection.cpp, bIsUnicodeServer is ‘false’.

what is a problem? -;;

To use character sets other than ANSI, the Perforce server needs to be set up to use ‘unicode’ mode.

See Perforce’s documentation for how to perform this operation: