connect-session-knex issue

chrome-debug.log

Listening on port 3000
  express:router dispatching GET /increment +6s
  express:router query  : /increment +3ms
  express:router expressInit  : /increment +1ms
  express:router session  : /increment +2ms
  express-session fetching 9uxMmBYUXEWSBRlZH2f8j0X3IH4eYFyb +5ms
  express-session session found +8ms
  express-session saving 9uxMmBYUXEWSBRlZH2f8j0X3IH4eYFyb +8ms
  express-session split response +1ms
  express:router dispatching GET / +9ms
  express:router query  : / +0ms
  express:router expressInit  : / +1ms
  express:router session  : / +0ms
  express-session fetching 9uxMmBYUXEWSBRlZH2f8j0X3IH4eYFyb +1ms
  express-session session found +5ms
  express-session touching +2ms
  express-session touched +1ms
  express-session ENTERED WRITEEND. req.originalUrl: / +0ms
  express-session ENTERED WRITEEND. req.originalUrl: /increment +8ms

firefox-debug.log

Listening on port 3000
  express:router dispatching GET /increment +2s
  express:router query  : /increment +3ms
  express:router expressInit  : /increment +1ms
  express:router session  : /increment +1ms
  express-session fetching vsz9hN50DwNfmmp8e_vzOOqrZ3pV-U8L +2ms
  express-session session found +7ms
  express-session saving vsz9hN50DwNfmmp8e_vzOOqrZ3pV-U8L +7ms
  express-session split response +1ms
  express-session ENTERED WRITEEND. req.originalUrl: /increment +22ms
  express:router dispatching GET / +180ms
  express:router query  : / +1ms
  express:router expressInit  : / +1ms
  express:router session  : / +1ms
  express-session fetching vsz9hN50DwNfmmp8e_vzOOqrZ3pV-U8L +1ms
  express-session session found +9ms
  express-session touching +5ms
  express-session touched +0ms
  express-session ENTERED WRITEEND. req.originalUrl: / +1ms

package.json

{
  "name": "test",
  "version": "0.1.0",
  "main": "test.js",
  "dependencies": {
    "express": "^4.14.0",
    "express-session": "^1.14.1",
    "knex": "^0.11.10",
    "connect-session-knex": "^1.0.23",
    "pg": "^6.1.0"
  }
}

server.js

var express = require('express');
var session = require('express-session');
var KnexSessionStore = require('connect-session-knex')(session);

var knex = require('knex')({
    client: 'pg',
    connection: {
      database: 'postgres',
      user:     'postgres',
      password: 'ppp'
    }
});


var app = express();

app.use(session({
	store: new KnexSessionStore({knex: knex}),
	secret: 'secrets',
	saveUninitialized: false,
	resave: false
}));


app.get('/', (req, res) => {
	res.send('counter: ' + req.session.bla + '<br/><a href="/increment">increment counter</a>')
});

app.get('/increment', (req, res) => {
	req.session.bla = 1 + (req.session.bla || 0);
	res.redirect('/');
});


app.listen(3000, () => {
	console.log('Listening on port 3000');
});