Canyou potacreenshotof the problm?

The image rendering is just text data being sent to the browser and then parsed as HTML and JavaScript, so it shouldn't have anything to do with CPP.

Have you tried wrapping everything in a try-catch block?

Need to add a closing tag for the canvas element.

  cout << "<canvas id=\"cvs" << displayID << "\" "
          "onmousedown=\""
          "  console.log('omg!');"
          "  var txt = getElementById('txt" << displayID << "');"
          "  txt.style.display='inline';\""
          "  ></canvas><textarea

As far as the failing test cases, I suspect something is throwing an error outside the actual test cases??

Seems to have resolved itself.

Fixed.

Approved.

Thanks for the input.

Should be fixed now.

Some corrections made, can you try again?

Fixed.

Example test cases updated to demonstrate the edge case.

Sounds like a CodeWars issue. Try again?

Always say what language you are using, @marmotteNZ. Thanks rossbenzie.
Fixed.

Could be a CW issue. Things look as you say - that the corrections haven't been made. I went back and attempted to edit the kata, but re-publishing times out.

I have reduced the amount of stuff written to stdout, so this error should occur less often.