I pasted into a iTerm2 terminal window, cat > /dev/null. I just now tried pasting into a Jupyter notebook, and into the HTML entry box of the JSFiddle I linked

I pasted into a iTerm2 terminal window, cat > /dev/null. I just now tried pasting into a Jupyter notebook, and into the HTML entry box of the JSFiddle I linked to. Again, Safari copy&paste to those elements in Safari includes the annotations. Firefox does not. Pasting to the terminal and pasting to a Jupyter notebook are my two primary expected paste destinations.