they made quite an effort to not get parsed, in fact, it seems that they explicitly requested to not be automatically parsed (at least by Kodi) as their html code now includes
<button type="submit" class="gray_btn" onclick='$("#chash").val("bb"+$("#chash").val());//For Kodi devs: we are prepared to rotate our code every hour. So please stop including us in your addons.'>Continue to File</button>
Sample URL please
There is a sample URL on the youtube-dl bugtracker; dunno what it is, but it most certainly exhibits the described symptoms.
Fixed https://github.com/pyload/pyload/pull/2605 ;)
Most helpful comment
Fixed https://github.com/pyload/pyload/pull/2605 ;)