Add child.props logic back in

Author: valentijnnieman

dash_core_components/dash_core_components.min.js

@@ -187,7 +187,19 @@ export default class Tabs extends Component {
                 // TODO: handle components that are not dcc.Tab components (throw error)
                 // enhance Tab components coming from Dash (as dcc.Tab) with methods needed for handling logic
                 let childProps;
-                childProps = child.props;
+
+                // TODO: fix issue in dash-renderer https://github.com/plotly/dash-renderer/issues/84
+                if (
+                    child.props.children &&
+                    child.props.children.props &&
+                    child.props.children.props.id
+                ) {
+                    // if props appears on .children, props are coming from Dash
+                    childProps = child.props.children.props;
+                } else {
+                    // else props are coming from React (Demo.react.js)
+                    childProps = child.props;
+                }
 
                 if (!childProps.value) {
                     childProps = {...childProps, value: `tab-${index + 1}`};