I guess we aren't writing it mostly because almost no device writes about such things like WFD. Indeed right now wifi display isn't a native AOSP feature like it was earlier and we need caf additions for that. So it isn't technically broken as of AOSP.Well, this is a bummer. I wonder why this fact is not mentioned in the "Not working" section. I'm not trying to blame anyone, obviously, this is a free project, and I deeply respect the people who are working on it, but the statement “all bugs are fixed” is a misleading information, imo.
This doesn't absolutely mean that I won't try to fix this just as soon as I get time, because I will together with updating blobs from new caf 8996 releases