There is a situation for Newcomers happening which do not allow them to enter external links in their own pages, normally solved with Captcha or such equation to make sure this is a human editor ( preventing from spam).
But there is a BUG: using "Save & Continue" the Newcomer gets an Error message that says "Please re-solve the equation." without the fields to enter it ! No Chance! .
Using "Save" Button brings the Equation fields to enter (Captcha ) and does work as usual.
Using "Save&Continue" does it not.
See the detailed information on the community forum : http://community.wikidot.com/forum/t-2155405/