it work correctly for me.
 
so give me ecco file and detail operate step to generate the issue, thanks.

hmm... this is strange.  I cannot repeat the issue in ext 4.2.1.7.  Maybe I found it in an earlier version of the launcher.  I will check this later.
 
In the meantime, I am uploading the ecco file I created when I first detected the problem (see the Search Results tab).  The search text is "FDA" in my example, which I showed in the screenshot I uploaded in my first post.
 
For more information, the text I added to ecco was copied from a webpage (http://www.fda.gov/Food/LabelingNutrition/default.htm) and pasted into Ecco using the ExtendedPaste->RTF Text command.  I hope this is useful.
 
I will keep trying to recreate the problem.  Maybe, I missed something from the first time I noticed the problem.

slang, regarding your example,  did you copy/paste from a web page?  Maybe, that is the issue?