I am having the same issue. I've tried everything you mention above with the same results. It's extremely frustrating as I have burned valuable company time trying to get this to work. I have to say its a bug at this point that needs to be addressed. Since your issue was several months ago, I am hoping that you came up with or found a solution. If you can share it here I would be very grateful.
Unfortunately I have had no luck with this issue and no other responses regarding this issue either, i'm not sure what others are doing, or not doing to avoid this issue. For now I am avoiding using the Edge Animate tool inside a fluid website until this functionality is figured out, you can only make it responsive at certain resolutions and no fluidity in between. Frustrating I know, I honestly expected someone to pop up a simple answer to this question fairly quickly....
If anyone has a solution to this it would be great to find out.... it should be really simple... surely someone has covered this already!?!?
I am having this issue as well. I've tried all combinations of size, positing, and even the responsive layout presets. I'm frustrated as well.
So what you're seeing is a browser issue related to CSS; applying a transform doesn't recalculate the size of the element (#Stage), which is why the elements underneath don't reflow.
When writing the tutorial this is one of the first things I spotted (and THE MOST annoying thing to figure out) but there's code included in the sample files from the tutorial which will recalculate the parent container the Stage is placed into. So your code needs to look something like this for it to work properly:
<div id="Stage" class="EDGE-xxx">
</div> <!-- Close stage -->
</div> <!-- Close myParent -->
(the <!-- comment tags --> are just in there for reference.)
If you download the sample files from the tutorial page I've also included the demo HTML files with the Animate composition embedded in the page. Take a look at that code and it should give some additional guidance. Basically you just need to wrap the Stage in another div and you should be fine.
Brilliant! Thanks Sara for clearing that up, found your HTML file example and I am now delighted to have egg on my face .