[regex-coach] Regex Coach \K option fails?

[mike]

 From the PCRE docs:

The escape sequence \K causes any previously matched characters not to 
be included in the final matched sequence. For example, the pattern:

          foo\Kbar

matches "foobar", but reports that it has matched "bar".

http://www.pcre.org/pcre.txt


This fails in The Regex Coach. Why?

Thanks