One issue I am having (already reported to devs) is setting up different responsive views between tablet and mobile-portrait. I'm wondering if anyone else is experiencing this? Its a big help, to me and the devs, if its isolated to only me.
I haven't thoroughly tested everything but it appears that when I make a change to an element in mobile-landscape, it bubbles up vs only bubbling down. For example, if I change a section to single column in mobile-landscape, from say a 2 column grid that was defined in desktop view and unmodified in tablet view, when I go back to tablet mode (larger media query resolution) it is also single column which is typically not desirable at this resolution, desktop is unaffected by the change. Another example is when I changed the font size of an element in mobile-landscape, it changed the size in tablet mode (bubble up). This only appears to be happening between the two screen sizes, tablet and mobile-landscape. Desktop and mobile-portrait seem to work as desired.
I am using the latest version of Chrome as of posting this.
Manually adjusting the css export is the current solution.
Also, I noticed with 4 column, I get the 2x2 option only in mobile views. Will this be changed in a future version?