We have a standard page in our system with the web path 'study', which is correct, and an additional web path showing in the web paths screen of '404-not-found/study'. However, in the tree descending from the '404 Not Found' page asset, there is currently no mention of any assets called 'study'.
There had previously been a linked child element of the '404 Not Found' page, but this was trashed, and no longer exists. Nor do any remaps exist for this path, and the Linking screen of the '404 Not Found' asset doesn't show any linked children named 'Study' (there are other children which are appearing as expected).
Any ideas?
Just re-update the web path of "study" page and see how it goes.
It sorted itself out when we added a redirect from the unwanted path to the desired one. I'm just a bit concerned as to what caused it, since it was blocking creation of content on the other path.