All information about this bug is already presented in the bug thread https://bugzilla.wikimedia.org/show_bug.cgi?id=29585 but I think we need a separate bug for this kind of these troubles.
After editing
http://www.withoutvowels.org/wiki/Hebrew:%D7%95%D7%94%D7%90%D7%A8%D7%A5 the
link to this page from http://www.withoutvowels.org/wiki/Tanakh:Genesis_1:2
looks like a link to an nonexistent page (despite of it exists).
Further investigation has shown that this trouble spots when and only when "Auto-number headings" option in user preferences is on.
Weird?
Version: 1.18.x
Severity: normal
Whiteboard: aklapper-moreinfo