freebeer
from a different country, I have seen it several times (and fixed the position/mapped the change).
It is possible this section was built later to connect 186th to the southwest with 188th northeast, and inherited both names and was assigned an arbitrary transition.
Alternately the transition between geographic name levels was planned for this point or nearby.
(A third unlikely possibility, the stretch between two intersections is actually named 187th, joining 186 to 188)
Agreed that a survey and precise positioning is needed; I had to reposition my nearby transitions by many metres to where EGNOS-corrected GPS placed the posted streetsigns, from the original map data.
I am unfamiliar with Florida or county naming conventions.