It is possible to alter the position of an issue directly in the map.
To alter an issue's position, i.e. move it to another position:
- Click on the issue you would like to move, to bring up the issue popup
- Click the move icon in the issue popup
- Drag the marker to the new position in the map
- Confirm (or cancel) the change
This function is only available if explicitly enabled by your JIRA administrator.