Express.js CRUD – GET hangs after DELETE in Chrome

I am playing around with a really simple express.js 4.0.0 mongoose CRUD application / api. I am using postman to test it. I created some entries in the database by posting. Now when I try to delete one of them it seems to work but the first time I use GET after that, postman hangs. The same happens in the browser. It just keeps showing the loading spinner. The problem is not with mongoose because when I use a GET route, the remove() works.

UPDATE This seems to be an issue with chrome ( v. 36.0.1985.125 ) In Firefox and Sarafi it works. So, maybe this is a caching issue? I tried setting headers in postman like suggested here but it did not help.

Here is the code:

var express = require('express');
var app = express();
var bodyParser = require('body-parser');
app.use(bodyParser());
var router = express.Router();


/* 
UPDATE
Suspecting it is a caching issues in chrome, now using this middleware to prevent caching 
*/

router.use(function(req, res, next) {

  res.header('Cache-Control', 'private, no-cache, no-store, must-revalidate');
  res.header('Expires', '-1');
  res.header('Pragma', 'no-cache');
  next();

});
/* UPDATE */

app.use('/', router);

router.get('/', function(req, res){
    res.send('Homepage');
});

var server = app.listen(3000, function(){
    console.log('Listening to port %d', server.address().port);
});

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
var Schema = mongoose.Schema;
var BearSchema = new Schema({
    name: String
});
var Bear = mongoose.model('Bear', BearSchema);

router.route('/bears')
    .post(function(req, res){
        var bear = new Bear();
        bear.name = req.body.name;
        bear.save(function(err){
            if(err){
                res.send(err);
                return;
            }
            res.json({ message: 'Bear created' });
        });
    })
    .get(function(req, res){
        Bear.find(function(err, bears){
            if(err){
                res.send(err);
                return;
            }
            res.json(bears);
        });
    });

router.route('/bears/:bear_id')
    .delete(function(req, res){
        Bear.remove({
            _id: req.params.bear_id
        }, function(err, num){
            if(err){
                res.send(err);
                return;
            }
            if( num === 0 ){
                res.json({ message: 'Nothing deleted' });
                return;
            }
            res.json({ message: 'Successfully deleted' });
        });
    });