It has been mentioned on Chat and the Forum that some calls seem to cause the map to show a station in the wrong location.
An example is
2022-04-14 15:46 DK3DUA JO61 G0UPL KM46 14.097172
The RX station G0UPL appears in Washington State, in the outskirts of Seattle. He is sending reports using his correct locator of KM46, just KM46.
73 Alan