Forum:Spoilers turning invisible

The wiki I've been working on lately uses as a lot of spoiler tags (, < /spoiler >). Right now, in some places, rather than displaying the spoiler warning and expandable link like they should (correct example: http://sryth.wikia.com/wiki/NV) they are turning completely invisible (problem page: http://sryth.wikia.com/wiki/The_Hall_of_Ruin). This is happening across browsers and across skins. Sometimes, if I just add a blank line before or after the tags it fixes it. But sometimes it doesn't. Help?

Psychoadept 21:58, November 16, 2011 (UTC)