message: Fix missing tiles with external tilesets.
diff: @@ -155,7 +155,13 @@ namespace Cesium3DTiles {
  std::vector<Tile> externalRoot(1);
  externalRoot[0].setParent(this);
  this->getTileset()->loadTilesFromJson(externalRoot[0], tilesetJson, this->_pContentRequest->url());
  +
  + // TODO: this is a race condition, because there is no guarantee that a move of a vector is atomic.
  this->_children = std::move(externalRoot);
  +
  + // Bump up the geometric error so we always refine past this no-content tile.
  + this->setGeometricError(9999999999.0);
  +
  this->finishPrepareRendererResources(nullptr);
  } else {
  this->_pContent = std::move(pContent);
  