Whan I drag the map the marker is not moving with it

When I drag the map, the marker is not moving with it, but stay at the center of the map.
`


`

`export default {
data() {
return {
centerMap: {
lat: 48.853,
lng: 2.298
},
zoom: 14
}
},
}
`

Here is a short demo of the issue:
https://drive.google.com/open?id=1L_EwjmGV603k84aZuTVdGSbHPk0auQ5U