Accessible focus rectangle not visible on IE10

I have a project published as responsive in Captivate 8.0.1.242.  The goal is to achieve WCAG 2.0 AA certification.  Everthing is compliant except the focus rectangle is not visible in IE10 (it is in Chrome).  The buttons in the nav bar show the focus indicator but button we put on screen do not.  The focus is there in that given we know how the buttons are ordered we can tab to them and use the spacebar to activate but we cannot see the focus rectangle.  If we modify the index.html launch page and change the code <meta http-equiv="x-ua-compatible" content="IE=10"> to <meta http-equiv="x-ua-compatible" content="IE=edge"> then the focus rectangle is visible if we run in IE11.  In summary it works in all cases with Chrome, it does not work in any case on IE10 and in it does work on IE11 if we modify the index.html so it will use the newest version (i.e. content="edge") of the browser.

Looking to suggestions on how to get it working on IE10 as that is the clients corporate standard.  Thanks in advance for any suggestions.