When moving pages with the "move subpages" option checked on en.wiki, I consistently get a database syntax query error, for example:
A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was:
(SQL query hidden)
from within function "MovePageForm::moveToNewTitle". Database returned error "1062: Duplicate entry '4-Database_reports/Recently_created_biographies_of_living_people' for key 2 (10.0.6.26)".
It moves the root page, but doesn't move any of the subpages.
Version: 1.16.x
Severity: minor