The blue banner "RESPONSIVE MODE" in Page Builder 2.0 is brief to the point of inaccurate.
As a user, my assumption is that when clicking the mobile icon at the top, I am in 'Responsive Mode' and so any edit I make with this clicked will (as the banner says) "only apply to 640px and below". NOT SO (!!!!)... It's only arrangements on the sections menu to the right.
And the 'User guide' is not very robust/clear. I'm over here guessing and testing like I'm walking on ice. And I'm glad I did... if I had rebuilt the entire page for mobile view only to realize that I mucked up the web view... let's just call that demoralizing.
PLEASE... At least link the guide in the banner. And a more user friendly training for mobile view editing. 🙏
Thank you for coming to my TED talk. It's long because I care.
Rock on!