Problem with Open/Close WP spoiler text

There is problem with open/close WP spoiler text. When using Avada theme.
Only upper part of text is shown which can be seen here:

https://www.dropbox.com/s/7fks4htl8lz1j8y/Zrzut%20ekranu%202013-07-25%2014.04.31.PNG

http://ww.wp.xz.cn/plugins/wp-ui/