Using the free trial so it's the premium service.
One map I got of a first class cabin had "P" down for 1A and 1K and that was it.

Tried another flight to JFK next week and that's showing seats taken etc. 64K is available on that one and a couple of centre CW seats seem to be blocked for whatever reason.

The flights I was looking at must be pretty open at present and that's why nothing came up (although both bassinet postions in 15AK) and blocked on what looks like a 4-class plane.