Steps to Reproduce
Open your instance in Internet Explorer 11.
Go to /sys_properties_list.do and search for the glide.template.max_context property.
Set the Value to 2 and click Update.
Navigate to the Change Request form and apply the template by right-clicking on the header.
Note that it opens in a pop-up window with the error message "Internet Explorer has modified this page to help prevent cross-site scripting" at the bottom.
This issue has been fixed in later releases. Review the Fixed In field to determine the versions that have a permanent fix.
Related Problem: PRB643257