Clipboard button on an empty instance copies `undefined`

[SimonDMC]

Clicking the "Copy to clipboard" button on an empty instance copies the literal string undefined.

bowtie-undefined.mp4

I'd say the best way to fix this is to not render the Clipboard button at all whenever the instance is empty - it seems redundant in that case.

Happy to work on this once accepted.

[Julian Berman]

I'd say the best way to fix this is to not render the Clipboard button at all whenever the instance is empty - it seems redundant in that case.

I think an alternate fix which probably makes sense for other reasons might be to simply auto-select the first test when opened!

[Julian Berman]

And yes feel free to grab this one, thanks for filing!