URL: m.aliexpress.com
Browser / Version: Firefox 35.0 mobile
Operating System: Android
Problem type: Don't know but something's wrong.
Site owner: No

Steps to Reproduce

1. Navigate to: m.aliexpress.com
2. There is a menu on the top left side of the scree, which is supposed to be shown when you want it, i.e. when you press the button.
3. If Firefox, the menu is shown all the time, without pressing the button
4. In other mobile browsers, it works as supposed

Expected Behavior:
Press the three-stripe button to open the menu
Actual Behavior:
Menu already opened, without pressing the button; site scrambled