Screenshot:
Every time when Multiplayer tab loads, my game screen lowers down for few centimetres and it interrupts me when I play a game or design a map. Did you ever experience this problem? How can you fix it?
I'm using Google Chrome on Windows XP.

Unable to see the screenshot.

I get this problem on my home computer when using Firefox. But it doesn't happen with any other browsers. I can post a screenshot when I get home if Croivan hasn't put a new one up.

Sometimes my page goes to right.

Link: https://mail.google.com/mail/u/0/s/?view=att&th=1422f1bcfd36e772&attid=0.1&disp=attd&realattid=1450987805193797632-local0&safe=1&zw

The link doesn't work but it's nothing, I think I understand your problem,

So how to fix it? Does anyone know?

I installed Flash so I can play on Opera, and this problem doesn't appear on Opera. Looks like it's only Chrome-related.

Edit: I solved this problem thanks to Fizzer. Apparently, it was happening because of extension named 'hosts'.

Edited 11/9/2013 16:03:00