The problem is if you click the insert hyperlink button in IE you will receive the drop down menu to enter the url, but you can not set focus on the textbox to enter a URL. everytime you click on the box the focus goes inside the below content editable
How to repro:
Open this link http://mindmup.github.io/bootstrap-wysiwyg/ in IE 8, click on the icon to add link and click on the URL box and try entering something
Internet Explorer 8 is not supported by this editor. As the documentation states:
A cursory glance at the source shows a couple of items that would prevent IE 8 support, such as the use of
FileReader
(Introduced in IE 10) andwindow.getSelection
(Introduced in IE 9).CKEditor supports Internet Explorer 8.