Yeah, I figured it would be something like that but I was still curious. I think some of it may have to do with how long have masters been around and how often are they in the same field as previous degrees: in Spain we used to go from Licenciatura (5 or 6 “years”) or Ingeniería (5 or 6 “years” plus thesis) to Doctorates, then the first masters were MBAs or in Labor Safety (unlikely to be your previous field), and then Bologna split the old degrees into two chunks, with the first years forming a Grado and what used to be the specialization years becoming a Masters. If someone went straight from Grado to Masters in the same field, they will still specify it, because of that history of masters usually being in a different field.
That is interesting. In Norway, we went to the Bachelor/Master system relatively recently recently as part of harmonizing with EU degrees. Vocational degrees that ended up in protected titles generally seem to have ended up as Bachelors if the were 3-years degrees like nursing, or Masters if they were 4 1/2 year degrees like engineering.