A common reason for this is that the author of the topic changed the priority of the output filters in the topic or even replaced the default ones of their own. That way, when you insert a short Revolution slider slide, paragraph tags are inserted into each line of output, breaking the Javascript code. A typical message in the Firefox error console:
Error: SyntaxError: syntax error Source Code: </p>
This is a topic that the topic author should fix. If you want to try to fix this yourself, find a line, for example:
add_filter( 'the_content', 'wpautop' , 99);
and change the priority (99) of the filter to something like 9. This can help, but also break something else. In some topics, the code is not quite right, but you can look for a function to add or remove filters from the output of short codes. You can see examples on the pages that I provided below.
Nevertheless , before doing this, try this: in the latest versions of the Revolution slider there is an opportunity to avoid filtering . When you create a slider, in the "Troubleshooting" field there is an option "Protect output filters". Turn it on (I used the "By Echo Output" parameter).
This is a known issue with some Wordpress themes. Also note that if the theme has affected this plugin, it will surely affect other plugins.
A few comments about this issue are posted at http://pippinsplugins.com/never-remove-the-default-the_content-filters-in-themes/ and http://theandystratton.com/2011/shortcode-autoformatting-html-with- paragraphs-and-line-breaks
From the first link (Never remove the_content's default filters in Themes):
There is a terrible, scary practice among developers to remove some default filters that apply to the message and page content ...
From the second link (Shortcode Autoformatting HTML with paragraphs and line breaks):
... this mysterious problem of my short code output is mysteriously automated with paragraph tags and line breaks ... Its global removal of two very important filters of the main content that WP has built-in ... This makes this theme work perfectly and negatively affect ANY and ALL plugins with short codes ...
The final decision is the comment mentioned in the second article:
Do not use a topic in which bad code.