Appears to be working in Firefox but at least Chrome & Safari are broken. Should be a really recent regression so very few possible changes to blame...

Easiest repo: the todo list on our homepage.

_createInitialChildren: function(transaction, props, context, lazyTree) {
    
    var innerHTML = props.dangerouslySetInnerHTML;
    if (innerHTML != null) {
      if (innerHTML.__html != null) {
        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);
      }
    } else {
      var contentToUse =
        CONTENT_TYPES[typeof props.children] ? props.children : null;
      var childrenToUse = contentToUse != null ? null : props.children;
      if (contentToUse != null) {
        
        DOMLazyTree.queueText(lazyTree, contentToUse);
      } else if (childrenToUse != null) {
        var mountImages = this.mountChildren(
          childrenToUse,
          transaction,
          context
        );
        for (var i = 0; i < mountImages.length; i++) {
          DOMLazyTree.queueChild(lazyTree, mountImages[i]);
        }
      }
    }
  },
  /**
   * Receives a next element and updates the component.
   *
   * @internal