Wordpress 3.0 Hidden Category Bug
This bug still exists in 3.1 and WebTechGlobal is trying to establish why mass creation might cause it over manually creating categories using the administration interface. Here is a screen shot to explain what is happening quickly…
As you can see, the categories show in the “Parent” menu but not in the standard category list on the right. When I delete the three categories on the right, the rest become visible. I can see no issues with the data, taxonomy matches fine.
I opened a forum post on the WordPress.org website and also found a WordPress Trac regarding this issue.
http://wordpress.org/support/topic/ticket-14471-hidden-categories?replies=3#post-1626831
http://core.trac.wordpress.org/ticket/14471
This problem is effecting Easy CSV Importer and other similar plugins not created by myself or WebTechGlobal. A solution is highly valuable and if you find it somewhere on the WordPress site please provide the link for £15 reward paid via Paypal.
4 responses on “WordPress 3.0 Hidden Category Bug”
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I havn’t got a link, or a technical explanation for the problem… But it seems that parent-child connections are not set up on import. What worked for me was to search for one specific child category – they DO exist
(eg. ‘Caleta de Fuste’ from the img above), and select it (!). On return to the category menu all links were restored in my case 
… try it out.
Btw. since parent-child relations are valid all other places than the category list I am thinking there is a variable somewhere that needs to reflect the depth of the category hierarchi – and that this is set when a child category is selected… If this is so, this variable should be incliuded in import files, and reflected in the import plugins … I am not a programmer, so these are just my conceptual thoughts…
Hi, yes doing an action within the blog seems to solve it, but would that not suggest there is data regarding the link between them for them to then show correctly? It’s a strange one, I’ve studied the database data, looks fine to me unless I’m really missing something.
Ah ok, there may be a some sort of counter regarding number of categories setup then searching corrects an issue with that counter. Nice one thanks I don’t think I would have considered that but posts work in the same way. There is a global counter that I’ve seen showing incorrect values. I’ll get around to this asap see if I can fix it.