void Element::setIsInTopLayer(bool inTopLayer)
{
    if (isInTopLayer() == inTopLayer)
        return;
    ensureElementRareData()->setIsInTopLayer(inTopLayer);

    lazyReattachIfAttached();
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.