I did. All I see that's different is the left column of categories gone, and the stage replaced with a big text box.
Oh, wait, do you mean you did your coding in the JS console?? If you're editing the Snap! source code, either download the code and use your favorite text editor, or embed the changes in JS Function blocks, the way the bignum library does.
The bug I made a topic about? No, It's just in general; when I open snap.html in my offline copy, it has that bug.
(Consider all further instances of "right-click" having an implicit " or ctrl-click")
I used the right-click menus. I wasn't really changing the code, just moving Morphs around, resizing them, and, for the textbox, using the WorldMorph right-click menu to make two demo Morphs, a ScrollFrameMorph (with a FrameMorph child) and a TextMorph.