What version of Data Bridge? most likely you have an older version of Data Bridege that uses an older version of CK Editor that is not fully updated for IE compatbility.
you can update the sites CKEditor files manually:
in the webassist/ folder, rename the ckeditor folder to ckeditor_bak
On this page:
click the button to launch CK Builder. Select to use the Full Preset, and the Kama Skin.
Copy the downloaded CKEditor folder to the webassist folder in your site.
from the ckeditor_back folder, copy the following three files:
and paste them in the new ckeditor folder.
you will need to clear the browsers cache to see the updates take effect.