On xowiki < 0.31 the return_url for a new page was the page itself, so after adding a new page you were redirected to that page.
This changed in Xowiki 0.31 (i think). Editing a page returns you back to that same page. Adding a new page always goes to the wiki index page.
I made the following patch to make it work the same for edit and new page.
Index: xowiki-www-procs.tcl
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RCS file: /cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
retrieving revision 1.8
diff -r1.8 xowiki-www-procs.tcl
212,213c212,213
< set myurl [expr {$new ? [$package_id url] :
< [Page pretty_link -package_id $package_id [my form_parameter name]]}]
--- set myurl [Page pretty_link -package_id $package_id [my form_parameter name]]
236c236
I did not notice any problems with this change, but I could be wrong!