ElevationGrid keeps falling down...

[wilhem]

Describe the Bug
I tried to create a simple landscape by using an ElevationGrid feature.
Despite the fact, that the ElevationGrid is visible and reflects exactly my wishes, it falls down from the world.

Steps to Reproduce
Take the minimal example I already created here.
Pay attention to replace my texture (2345.jpg) with another one.

#VRML_SIM R2023b utf8

EXTERNPROTO "https://raw.githubusercontent.com/cyberbotics/webots/R2023b/projects/objects/backgrounds/protos/TexturedBackground.proto"
EXTERNPROTO "https://raw.githubusercontent.com/cyberbotics/webots/R2023b/projects/objects/backgrounds/protos/TexturedBackgroundLight.proto"

WorldInfo {
}
Viewpoint {
  orientation 0.11335379191925489 0.39200416219618567 -0.9129532598541904 0.6134529274482173
  position -8.806747535228917 7.3072727946927465 2.6034575669569326
}
TexturedBackground {
}
TexturedBackgroundLight {
}
Solid {
  translation 0 0 1.54
  children [
    DEF Grund Shape {
      appearance Appearance {
        texture ImageTexture {
          url [
            "2345.jpg"
          ]
        }
      }
      geometry ElevationGrid {
        height [
          0, 0, 0, 0, 0, 0.6, 0.72, 0, 0, 0.2
          0.4, 0, 0, 0, 0, 0
        ]
        xDimension 4
        yDimension 4
      }
    }
  ]
  boundingObject USE Grund
  physics Physics {
  }
}

Expected behavior
Expected is that the ElevationGrid does not fall through the ground and/or without the ground.

Screenshots
No screenshot needed

System
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.3 LTS"
PRETTY_NAME="Ubuntu 22.04.3 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.3 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

[omichel]

This bug was likely fixed in #6412. Can you test if it is still there on a nightly build of Webots R2023b-rev1?

[wilhem]

I found out that the problem was caused by the assignation of physic to the elevationgrid.
Removing it fixed the problem.
So I could fix it, without updating and/or changing my webots version