I think we shouldn't predict the future regarding this bug.
WebDAVFS is doing everything right, the problem is related to every GUI-Tool. Bash, vim, cat seemed to work just fine. 

Maybe it would be better to test for Darwin/10.8.0 and hope it gets fixed in Darwin/10.8.1. But i'm unsure if this version number is reliable. We could also serve all Mac OS Clients with NFD, afaik NFD is the default in HFS+. 

In the end, it's an fast fix so our Customers(like Emp*) can use WebDav with OS Mavericks right now.