The thing is Adam, this issue is real intermittent.  You example works fine - however in my application it's intermittent.  I do see a message in the Safari status bar that says "Cancelled opening the page" on pages that do not display the content in the editors (I sometimes have 3, 4, or 5 editors on the same page).  I've been trying to create a simple test app that demonstrates the issue but am unable to do so - I'll keep working on it though.

 

Ted