I have the University of Waterloo at address:
200 University Ave W, Waterloo ON N2L 3G1, Canada Lat:43.472 Lon: -80.545 Acc (m) 2455
saved as a pinned location. However, selecting it from the dropdown menu brings the map to here
while the location selection is still actually correct in its original location in North America.
It doesn’t do the same thing entering the exact same address in the search box, making a new pinned location of the same location, or making a new pinned location of a different location. It will zoom into a different location if the map is centred there when the pinned location is selected. Sirte Libya is just the centre of the default world view apparently.