BitKinex FTP, SFTP and WebDAV client

Using version 3.2.3 and I am having problems unlocking WebDAV files. I can successfully lock a remote resource (BitKinex sends a PROPFIND request followed by a LOCK request). The resource shows the lock icon "-" and the file is locked. When I try to unlock the resource, BitKinex sends a PROPFIND request, but never sends the UNLOCK request. This leaves the remote resource locked even though the client indicates that the resource has been unlocked (the icon for the resource is back to normal).

I can't see any way to upload files on this forum, but I do have the proxy capture of the LOCK and UNLOCK requests if that will help diagnose the problem.