Multiple markers have a vertical offset in pixels as the accumulation of height of the previous siblings

[Lamap]

The title pretty much explains the issue I experience.
If I am using a position absolute and adjusting the top position within the custom react node by the accumulated offset, it solves the issue.
I wonder if is there any trivial that I am missing?
I am using the tool with this versions:
"react-leaflet": "^4.2.0", "react-leaflet-marker": "^2.1.0",
And also having a stylesheet for leaflet as direct link:
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.3/dist/leaflet.css" integrity="sha256-kLaT2GOSpHechhsozzB+flnD+zUyjE2LlfWPgU04xyI=" crossorigin=""/>.

Thank you for any advise or confirmation in advance.

[eug-vs]

Also having this issue, @Lamap did you manage to find the workaround or working version?

[eug-vs]

Oh sorry I'm blind, as you said position: absolute fixes the issue for me. I didn't even have to update top position, it just works now, which is strange if it wasn't enough for you

[eug-vs]

I found that even with position absolute, if you provide sizes it immediately breaks (to the same behavior as described in the issue). Also position absolute breaks z-index - so riseOnHover doesn't work anymore (it works, but z-index is ignored on absolute element).

[Lamap]

I found that even with position absolute, if you provide sizes it immediately breaks (to the same behavior as described in the issue). Also position absolute breaks z-index - so riseOnHover doesn't work anymore (it works, but z-index is ignored on absolute element).

@eug-vs Thank you for your feedback! It confirms to me that indeed there is some issue even if it is not the exact same that I experience.
FYI for me it works only with the vertical 'top' adjustment, does not matter if I use the size prop on the Marker or not. The reason behind the different behavours must be the different lib versions we use.

[eug-vs]

I've tried using the same versions as you mentioned and the issue is present. Could you share the snippet how exactly are you doing the top adjustment? Here's my example, I didn't strip out anything in case it could matter.

<MapContainer
  center={[rentals[0]?.location.coordinates[1], rentals[0]?.location.coordinates[0]] as LatLngExpression}
  dragging={true}
  touchZoom={true}
  doubleClickZoom={true}
  zoom={13}
  ref={mapRef}
  className={`w-full h-96 md:h-[800px] z-0 relative ${className}`}
>
  <MarkerLayer>
    {rentals.map(rental => (
      <Marker
        position={[rental.location.coordinates[1], rental.location.coordinates[0]] as LatLngExpression}
        key={rental.id}
        riseOffset={250} // TODO: fix after https://github.com/holytrips/react-leaflet-marker/issues/9
        zIndexOffset={0}
        placement="center"
        interactive
        riseOnHover
      >
        <Link href={`/rentals/${rental.id}`} className="w-12 h-12 absolute bg-white rounded-full" title={rental.title}>
          <Image src={rental.imageUrls[0] || ''} alt={rental.title} fill className="rounded-full ring-slate-700 hover:ring-slate-50 ring-2 shadow-md shadow-slate-800" />
        </Link>
      </Marker>
    ))}
  </MarkerLayer>
  <TileLayer url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png" />
</MapContainer>

Do you have any other elements with position: absolute inside MapContainer? I think the behavior slighlty changed when I removed my custom absolute button which was inside MapContainer.

[Lamap]

Sure thing.
This is just a messy code where I played, what for I appologise but had no time to clean it up.
I used the react-leaflet-marker as MarkerExtra and also used overlays, but it does not make any difference for me.
`import '../../node_modules/leaflet/dist/leaflet.css';
import React from 'react';
import { useParams } from 'react-router-dom';
import { MapContainer, TileLayer, Marker } from 'react-leaflet';
import { Marker as MarkerExtra, MarkerLayer } from 'react-leaflet-marker';
import L from 'leaflet';
import myIcon from '../map-marker-area.svg';

export function Page2(): React.ReactElement {
const { id } = useParams();
const markers: { lat: number; lng: number }[] = [
{ lat: 47.25, lng: 19.25 },
{ lat: 47.23, lng: 19.21 },
{ lat: 47.27, lng: 19.27 },
{ lat: 47.22, lng: 19.22 },
{ lat: 47.21, lng: 19.29 },
{ lat: 47.21, lng: 19.21 },
{ lat: 47.28, lng: 19.2 },
];
const iconPerson: L.Icon = new L.Icon({
iconUrl: myIcon,
iconSize: new L.Point(40, 40),
});

return (
    <div>
        page2 {id}
        <MapContainer center={{ lat: 47.8, lng: 19.9 }} style={{ background: '#ff0000', height: '500px', width: '700px' }} zoom={10}>
            <TileLayer url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png" />
            <Marker position={{ lat: 48, lng: 20.7 }} icon={iconPerson}></Marker>
            <Marker position={{ lat: 48.4, lng: 20.5 }} draggable icon={iconPerson}></Marker>

            <MarkerLayer>
                <>
                    <MarkerExtra position={{ lat: 47, lng: 19.5 }} interactive={true} placement={'center'} size={[30, 30]}>
                        <div
                            style={{
                                background: '#000000',
                                cursor: 'pointer',
                                width: '30px',
                                height: '30px',
                                position: 'absolute',
                                top: '0',
                            }}
                        ></div>
                    </MarkerExtra>
                    <MarkerExtra position={{ lat: 47, lng: 19 }} interactive={true} placement={'center'} size={[30, 30]}>
                        <button
                            style={{
                                background: '#ff00ff',
                                cursor: 'pointer',
                                width: '30px',
                                height: '30px',
                                border: 'none',
                                position: 'absolute',
                                top: '-30px',
                            }}
                            onClick={(): void => console.log('sss')}
                        ></button>
                    </MarkerExtra>

                    <MarkerExtra position={{ lat: 47.5, lng: 19.5 }} interactive={true} placement={'center'} size={[30, 30]}>
                        <div
                            style={{
                                background: '#ff0000',
                                cursor: 'pointer',
                                width: '30px',
                                height: '30px',
                                position: 'absolute',
                                top: '-60px',
                            }}
                        ></div>
                    </MarkerExtra>
                    <MarkerExtra position={{ lat: 47.5, lng: 19 }} interactive={true} placement={'center'} size={[30, 30]}>
                        <div
                            style={{
                                background: '#ffff00',
                                cursor: 'pointer',
                                width: '30px',
                                height: '30px',
                                position: 'absolute',
                                top: '-90px',
                            }}
                        ></div>
                    </MarkerExtra>
                </>

                {markers.map((c, index) => (
                    <MarkerExtra key={`${index}-${c.lat}-${c.lng}`} position={[c.lat, c.lng]} size={[30, 30]} zIndexOffset={0}>
                        <button
                            style={{
                                background: '#ff0000',
                                borderRadius: '50%',
                                cursor: 'pointer',
                                position: 'absolute',
                                top: `-${index * 30 + 90}px`,
                            }}
                            onClick={(): void => console.log('sss')}
                        >
                            D
                        </button>
                    </MarkerExtra>
                ))}
            </MarkerLayer>
        </MapContainer>
    </div>
);

}
`

[Lamap]

Maybe my react version matters as well: "react": "^18.2.0",

[eug-vs]

I use the same react version. Thanks for sharing, maybe this will be helpful if someone else gives this a look. I couldn't find anything that can give us a hint

Also you accidentally pasted your firebase token, so make sure to revoke it asap, be careful with such things

[Lamap]

Opss, thy! I didn't notice that is included in the url :/

[Lamap]

FYI, when I wrapped the Marker inside a component it needed only the position: absolute to make it work.