Hello Thomas,
This appears to be IE version and compatibility with SAP CRM WEB UI issue.
For your two gaps, please find my response as below:
1. In your screen shot i can see buttons at the bottom. Are they not related to text displayed?
2. Check the IE11 patch level and compatibility with SAP CRM WEB UI.
Please refer Missing buttons, text, image with skin Signature Design
Thanks,
Kapil