Bbcode problem in admincp

[rubicon]

I send you a test on your PM with a count from my forum

It's a bbcode spoiler

--------------- Added [DATE]1542663530[/DATE] at [TIME]1542663530[/TIME] ---------------

The code for spoiler:

<div class="spoiler_wrapper"><div class="spoiler_button_wrapper"><input type="button" value="Show" class="spoiler_button" title="Reveal Contents" onclick="var el = this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0];if(el.style.visibility == 'hidden')
{el.style.visibility = 'visible'; el.style.maxHeight = 'none'; this.value = 'Hide'; this.title='Conceal Contents';} else {el.style.visibility = 'hidden'; el.style.maxHeight = '0'; this.value='Show'; this.title='Reveal Contents'}"></div><div class="spoiler_text"><div name="spoiler" style="visibility: hidden; overflow: hidden; max-height: 0">{param}</div></div></div>

From the hack MarkFL - Spoiler BBCode v1.5