If you have one there (and that wasn't an old picture), what does your CP pin look like?
I do not have the board handy, I need to look for it. But if to do some math, on my screenshot the PFD spurs are at roughly 62dBc, and the carrier is at 0dBm, that is power, converting to voltage is 0.5mV p-p spurs on the PLL output. I am not sure how much leakage from PFD to RF Out is specified for the part but would probably not be anywhere close to the ones on the screenshots you captured.
Looking at your screenshots it is hard to estimate power in a 100kHz bin , but lets say judging by the envelope about -30dBm which is after conversion to voltage is 20mV p-p. You measured 50mV p-p but as I said it was a rough estimate and the loop filter leakage may be attenuating the ripple on the loop filter pins.
I am falling sick at the moment, hope my calc made sense.
we can post a question on AD forum if your waveform makes sense to them , their engineers are pretty responsive.