pickPosition return a wrong altitude

[hieeyh]

cesiumManager.eventHandler.on('LEFT_CLICK', onLeftClick)
onLeftClick = function (movement) {
const viewer = cesiumManager.cesiumViewer
let ellipsoid = viewer.scene.globe.ellipsoid
let cartesian = viewer.scene.pickPosition(movement.position)
let latlng = GSModel.LatLng.fromCartesian3(cartesian, ellipsoid)
}
the altitude of the latlng is higher than real.

[hpinkos]

Closing this as a duplicate of #7261
@hieeyh, if you have any more comments or sample code to reproduce this, please add it to that issue. Thanks!