Normally, when you're editing or creating your own map and select a location, there will be a location pin for each selected location. However, those pins were missing recently. As the attached image, there are selected locations, but the map is completely blank.
Without these pins, creating, editing, and correcting your own map is impossible to do. Because you'll never know where you select the location or where your selected locations were.
Is this a bug or some kind of new update?