Seems like the lane assistant tags are ignored in lastest 3/4 builds of the free OSM mapfactor map for italy on android.
Tried various combinations about Mapfactor version (3.x 4.x and the last 5.5.x) along with some old version of italy_osm.mca and also with the latest (italy_osm.mca 20190805 build).
Results are shown by the following screenshots taken running a simulated path to illustrate the problem with the latests italy map build.
yes, the tags are the same as 4 yeas ago on the ways appearing in the above screenshot, and seems to be the right tags about turn:lanes and destination as the old build italy_osm.mca has shown: