P.S. I have these extentions enabled if relevant:

Bulk Image Downloader
Version 4.71.0.0

Download Chrome Extension
Version 2.2.4

Multicheck Checkbox Checker
Version 2.4

Translator
Version 0.11.11

This is very frustrating and still happens to me in every version from several months. Now I'm using:

Version: 35.0.2066.92
Update stream: Stable
System: Windows 7 64-bit (WoW64)

and writing from IE because keyboard wasn't working in Opera and the browser needs to be restarted every time. facepalm I always reproduce it when I open the developer tools to inspect elements on a site I'm developing and trying the Mobile view. Please fix this because it's really unusable.