WIZ750SR DHCP hostname invalid

The client address used in the DHCP discovery message includes an illegal escape character: WIZnetsc\026.mydomain.net

This is caused by a software error at:
WIZ750SR/ioLibrary/Internet/DHCP/dhcp.c:509

When will a fix be released?

Hi~
Please let me know under what circumstances the issue arises.
An error capture picture file is also good.