Since 3.8.1 the links in the menu-bar changed mysteriously. Sub-items now have the main menu item in their url.
The website is http://kirtan.nu/.
For example: the sub-item "kirtan-uitleg" (sorry, the site is in Dutch) under the main-menu-item "(wat is) kirtan" used to be http://kirtan.nu/kirtan-uitleg/.
Now it has changed to http://kirtan.nu/wat-is-kirtan/kirtan-uitleg/
The original sub-item urls are redirected to the new longer ones.
Any idea on how this might have happened?
I also have deactivated a breadcrumb-plugin. Could that have anything to do with it?