Hi,
I have installed the latest release 1.2.4 on Joomla 3.5.1 and the bracket-backbutton-bracket code is visible in the actal text of the article when it is called from a module - I have been using TC Latest News, which is a free article you can test with .. seems that others have the same problem with modules so hopefully this can help to resolve the issue as this is an awesome plugin.
Thanks for any advice