My Answers link breaks if answer is not the first posted answer (bug)

Testing CA...

I notice that if a user was not the FIRST to post an answer, then their link(s) in "My Answers" view ( ?view=myanswers) become invalid ( 404 - Question Not Found) .. these links are the format 

 http:///en/support-topmenu/rzzzz/74-general-technical-questions/3-what-s-the-airspeed-velocity-of-an-unladen-swallow

http:///en/support-topmenu/rzzzz/74-general-technical-questions/2-what-s-the-airspeed-velocity-of-an-unladen-swallow

( 2nd and 3rd answers posted)

HOWEVER, the user who posted the FIRST answer to the question gets a working link, of the format 

http:///en/support-topmenu/rzzzz/74-general-technical-questions/1-what-s-the-airspeed-velocity-of-an-unladen-swallow

Can we get this fixed? The only difference in the link is that answer prefix "1" works whereas all others do not??