Angularjs data is not updated on call of $apply - angularjs

Question

I have a controller that reads data via rest and displays it in a table - this part is working fine. Additionally i added a WebSocket and want to update the table if Websocket receives data. Here is the Code:
app.controller('allBookingsCtrl', function($scope, $http, currentUser){
$scope.bookingsList = [];
var ws = new WebSocket(wsRootUrl + '/allbookings');
ws.onmessage = function(message){
$scope.$apply(function(){
$scope.bookingsList = message.data;
alert(message.data);//displays correct data!
});
};
$http.get(rootUrl + '/timetracker/booking/all').success(function(response) {
$scope.bookingsList = response;
});
});
The problem is the table is not updated on call of apply. I debugged and could trigger onmessage by changing data from another browser. the content of data is also correct, no error is thrown.
So how to update the table/scope with data received by websocket?
here is html:
<table ng-controller="allBookingsCtrl" class="table">
<thead>
<tr>
<th>#</th>
<th>user</th>
<th>project</th>
<th>start</th>
<th>end</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="booking in bookingsList">
<td>{{$index + 1}}</td>
<td>{{booking.usersProjects.user.name}}</td>
<td>{{booking.usersProjects.project.name}}</td>
<td>{{booking.start | date:'yyyy-MM-dd HH:mm:ss' }}</td>
<td>{{booking.end | date:'yyyy-MM-dd HH:mm:ss' }}</td>
</tr>
</tbody>
</table>
Small Edit:
if i add alert(data); at the end of on message i see the alert with correct data! So only the apply with the list isn't working correctly.
added plunkr
I tried to reproduce this in plunkr and with no websocket - tried to get the update on ng-click. But this isn't working neither - here the click is not doing anything.

Answer 1

Can you change this line
$scope.bookingsList = data;
to
$scope.bookingsList = message.data;