Go to the page in the URL field, select all, and paste into scratchpad.
This appears to be the same problem as this upstream bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=355230
If you cut-n-paste from an html page with code, that should work (and doesn't). (note bug 685925). That's pretty severe.
Yes. I think this is a general problem, and the actual textual content in the test cases that we have should not lure us into thinking that it's not important.
Valid point (as noted in bug 685925) that not all reasonable, pasteable code will be plaintext.
This is now fixed upstream in Orion.