It's happening to me as well. Any way to fix it?
i believe im using the newest version of the code editor, but i think i accidentally found a bug?
the code im creating is showing up in the sidebar after wanted to move the code box from the bottom to the side, but then all the code disappeared - but was still there on the display? i ended up testing the code on toyhouse, as well, and it doesn't show up in the side bar, so its not too big of a deal. i've tried to reload the page, exit and then go back in, delete all the code and use the "clear" button, but the code in the sidebar never went away. (ignore the red line)