I used Locator in Manipulate[] to update mouse click point in GeoGraphics[]. The returned GeoPositionp[ from Locator has error in Latitude largely. See the following code. In this Poland map, Warsaw has {52.23,21.01} in latitude,longitude. Initialization of Locator to Warsaw did not work and there is 9.13 degree error in the latitude. It is huge error in location.

Manipulate[
 Column[
  {
   "LocPos",
   LocPos,
   GeoGraphics[GeoRange -> {{48, 56}, {12, 27}}, 
    GeoBackground -> "StreetMap", ImageSize -> Large]
   }
  ]
 ,
 {{LocPos, GeoPosition[{52.23, 21.01}]}, Locator}  
 ]

Attachments:

LocError1.png

LocError2.png