Hello ashutosh2015 ,
How did you create the fancy schmancy "bullet list INSIDE a numbered list"?
Looking at Knowledge Documents "Edit Resolution" field there is only a "bullet list" OR a "numbered list" choice available that I can see.
So I suspect that you've used "Source" and done something that the Editor normally would not be able to do. Then IE throws a wobbly (technical term) when it encounters it.
Maybe have a look at a Source and see if you can get the code for that section rendered successfully on a different web page, as a suggestion.
Or just stick with the one list.
Thanks, Kyle_R.
#helpinghands