Have you tried:
– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).
– switching to the Twenty Eleven theme to rule out any theme-specific problems.
– resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.
I’ve noticed this as well. I’m currently developing a site with a LOT of pages that all need to be structured via parent-child relationships.
The problem is with the Page Attributes palette of the Add New Page & Edit Page screens. The Parent pulldown only shows 17 page options. To find the parent I want, I must go out to the All Pages listing, click the Quick Edit link for the page, and specify the parent from the list under the Parent pulldown options there.
Should the pulldown for the Page Attributes palette be upgraded in a future WP version?
Firstly, as per the Forum Welcome, please post your own topic. Your problem – despite any similarity in symptoms – is likely to be completely different.
Secondly, I have a wiki-type section on one of my sites that contains no less than 86 separate, nested, Pages. I have no trouble with all of these being listed in the Parent dropdown. So this is site-specific and not a generic core bug.
Okay, I think I see what my problem is. In the Edit Page palette, the Parent dropdown is expanding to the right, with the left side of the pulldown options aligning with the left side of the palette. This means, that when a page title is long, the scroll bar is offscreen — and then I simply didn’t see that I could scroll down.
In the quick edit screen, the parent pulldown expands to the left, ensuring we can always see the scroll bar on the right.
I wonder if the CSS of the palette could be altered to accommodate this. I see that a similar issue came up with Drupal developers.
It might be worth posting this in Trac or Ideas suggesting that perhaps the dropdown could have a fixed width width with CSS overflow set to hide as opposed to the default auto. That would cut off longer page titles but should leave the scrollbar visible.
On my wiki I have some pretty long page titles but I generally use my browser (Firefox) windowed as opposed to full screen. That means that the dropdown expands beyond the browser viewport quite nicely. So you could try reducing your browser window slightly in the meantime to see if that helps.
