noscript source output not well-formed
Steffen told me you would be responsible for it.
Wenn sending piVars showTextSource, plugin output in noscript tags is not well formed. It looks like:
<p id="src_cb72"><a href="#">Hide source</a>
You see that there a two paragraph tags around the textarea. However, <p> is a block-level element and cannot occur below a block level element (here another <p> tag).
Removing the duplicated <p> tag around <textarea> helps. See attached patch.