message: WebTileDataSource avoids the TileGeometryLoader
  So it bypasses the tile.clear() call which would fix this issue
  I have made a follow up ticket to investigate
diff: @@ -54,6 +54,10 @@ export class WebTileLoader extends BaseTileLoader {
  texture.minFilter = THREE.LinearFilter;
  texture.magFilter = THREE.LinearFilter;
  texture.generateMipmaps = false;
  + // This is required because the WebTileDataSource uses the default setting of
  + // useGeometryLoader on the DataSource, so it has to clear the tile's objects
  + // manually.
  + this.tile.clear();
  this.tile.addOwnedTexture(texture);
  const planeMesh = addGroundPlane(
  this.tile,
  