The captions has been quite buggy for some time, trying to export it as a SRT is a real pain. The edge also isn't correct with some letters as shown in picture below. Where it almost becomes unusable...
We have completely redesigned the captioning workflow in Premiere Pro version 15.0. You will see this feature as well as many other dramatic workflow improvements. Please update to the latest version.
Learn all about the new captions workflow here: https://helpx.adobe.com/premiere-pro/user-guide.html/premiere-pro/using/working-with-captions.ug.html
YES ; PLEASE