Based on the provided information it is difficult to identify what the exact cause of the issue is. It might be caused due to:
1. Bad resource loading, which I doubt because it happens only in one browser. Nevertheless please check carefully this resource:
2. Bad styling, i.e. if you use some custom styles please disable them in order to see if the problem persists with the embedded skin.
In both cases you can inspect the problematic element using IE's web developer tool and tell which of the two is the problem.
3. Which version of the controls do you use? Your version might not support IE11. This is very important to check.
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