I have an issue when I line break in RADEditor but it keeps going to the bottom of the line in Internet Explorer v11.

Please note that the issue is reproducible on Telerik Demo site.

Steps to reproduce the issue:

Copy and paste the following content in HTML mode 

Some content
<br />
<br />
Put the cursor in the beginning of this line, press Backspace and after that Enter
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
Switch to Design panel
Press Backspace twice in front of the text "Put the cursor in the beginning of this line, press Backspace and after that Enter"
Press Enter
Result

The content jump to the bottom of the line


See the attached video for more information.