Tooltips do not work on elements inside Shadow DOM

Created by: ericcarino

I'm trying to add a tooltip to a button that resides inside a shadow DOM. Unfortunately, does not work. I traced the problem down to this snippet of code inside bootstrap.js.

Tooltip.prototype.show = function show() {
      var _this22 = this;

      if ($(this.element).css('display') === 'none') {
        throw new Error('Please use show on visible elements');
      }

      var showEvent = $.Event(this.constructor.Event.SHOW);
      if (this.isWithContent() && this._isEnabled) {
        if (this._isTransitioning) {
          throw new Error('Tooltip is transitioning');
        }
        $(this.element).trigger(showEvent);

        var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);

        if (showEvent.isDefaultPrevented() || !isInTheDom) {
          return;
        }

isInTheDom is false because jquery.contains doesn't find the element, which I assume is because it resides inside the shadow DOM. If I manually set this value to true, the tooltip works perfectly. See my screenshot below.

To access my JSBin example, use the link below. http://jsbin.com/qukeye/2/edit?html,js,output