For PROPFIND (and other methods defined to be "safe"): it really doesn't make sense to do a preflight OPTIONS for PROPFIND. Both are defined to be safe. Both could have broken server implementations.
We don't want to keep updating the "safe" list. So they're all "unsafe". Or maybe not "unsafe", just not compatible with HTML forms.
-- Anne van Kesteren http://annevankesteren.nl/
