Hustle and IE11 rendering issues

I am playing with Hustle on a new project and have done most of the development using Chrome. I was just running a browser check using IE 11 and noticed some issues, that I did not see searching the forum.

1. Popup window (using blue theme), the back ground colors are not displayed
2. Slide In - set to 50% scroll, and fixed to center bottom, the slide in is not visible. the X close button is just barely visible.

- C. Roth

hustle - internet explorer - IE11