Showing a light grey background when it should be transparant

I am making my new application with the new responsive engine and i love it!

But i found something strange. I place 2 rows togheter in a group with no background but still he is showing a “light grey” color as a background. Do i something wrong or is it just because of the beta version? Here some pics to show exactly what i mean…

Hi there @becode,

Are you sure that’s not the color of your page?

No the background is that light orange. And that group is withouth any background.