Feedback widget alignment problem

I have added the feedback widget to my web application. When it is open the heading doesn't align properly
so there is some whitespace under the heading and the Minimise and Close controls are offset. I've seen the same problem in both firefox and chrome (latest versions)
This alignment problem also causes the popup screenshot menu options to be offset. See the attached screenshots for examples of the problem. Is there a way to fix this?
My web application is using the bootstrap framework.