See my answer here:
I can't get the
lines to be in the code block, tried loads of things (even changing comments from ' to // to see if it helped).
I'm on Chrome, can anyone else reproduce this as well by editing my answer?
Edit: to reproduce:
wefwef rscommon.close wend
Add the two list items, underneath them on single spaces lines add:
Then (without anything else after the code) select it and press format code.