Hi.
By doing several tests I discovered (or at least in my case) what the problem was. It was not the file that Gianliuke indicated to me, but the following one called mapdrawer2016.nfs. I have put the previous version that worked perfectly (Q4 / 2017) and right now everything is perfect both the size of the names of the cities and the icons activated.
I hope that this solution will serve all those who happened the same as me.

Thanks in advance for all the help received.

A greeting.

P.D: I'm sorry for my English. I use the Google translator.