@idebr Could you please explain us more on how you are testing in #206.1. I s...

@idebr Could you please explain us more on how you are testing in #206.1. I see that you are changing tabs. I am doing the same in Firefox. I have opened two tabs both showing block layout page, and pages are shown in viewport 320x480. I am changing tabs like you are doing but I dont see the "jump".
I am using Firefox 35.0.1 in Ubuntu 14.04