Thanks for reporting an issue. Sticky-kit is actually pretty complicated and handles a lot of sticky scenarios. If the issue isn't immediately obvious when written in text then please include a minimal case example of the problem on http://jsfiddle.net/ or something similar to help save us some time.
If you're opening a pull request, remember Sticky-kit is written in CoffeeScript, so you should be applying your patch to the CoffeeScript file and not the JavaScript files. Don't worry about building/minifying the JS files, I'm glad to do it for you. In any case, you can see how it's done in the Makefile.
Thanks