[Backport to 7.8] Checkbox is not properly displayed on the CMS in view mode (in IE 8 on WinXP)

Steps to reproduce:

On virtual machine with Windows XP, running IE8

1. On the CMS, go to a document with a checkbox
2. Mark the checkbox true in the document.
3. Save & close the document
   • Expected result: the document is closed and the checkbox is checked
   • Actual result: the document is closed and the checkbox is not checked