What you see is normal behaviour. Quoting the codex:
The list of categories to select from do not display with any
hierarchy, though that may be subject to change in future versions of
WordPress.
As far as I’m aware there is no plugin for this either.
Related Posts:
- Assign category a default post type
- What is the best way to set the post category (Custom Post Type) automatically based on the one of the tags assigned to the post?
- Display a query with multiple post types and same relationship on a single page
- Custom post status not working
- Load custom posts with same tag as page
- Date archives for custom post type
- How can I add dropdown widget/box to admin post page?
- Custom post type loops with different page templates
- Limit Authors to their Own Posts on front-end excluding admins
- Append taxonomy terms as class names in markup?
- How do you output custom code between posts in the loop?
- Loop through posts of a custom-post-type (event) and create .ics (iCal) file?
- Output custom post shortcode. Help spot the error.
- GravityForm: Populate Dropdown with custom post type [closed]
- Return array of categories to php function for current post
- Loading all files within a directory
- Get Post Primary Category
- Weird problem happening with custom taxonmy when creating/updating posts
- Filter categories of posts with checkboxes
- Insert HTML inside link in a walker
- What’s the difference between same wp functions get_posts(); functions in different form?
- Get posts from a custom post type by child categories of a parent category
- Show category ID on custom post type
- How to customize a permalink (URL) structure?
- Get parent categories of custom post type
- Can I list a custom post type within another custom post type in the admin area?
- Set URL link to featured image of custom post type
- AJAX load more for different custom post type loops
- PHP variable not regenerating when publishing multiple posts at the same time
- On update or create post redirect to current post position in list
- I need to add endpoint for wordpress categories
- Redirect 404 page with ID in slug to associated page with same ID in slug
- WordPress wrapped added a span tag to every single p tag
- ACF field key/value to show on taxonomy list
- Hide a widget inside a div on specific type of post
- Make a custom_post translatable
- Configuring a meta query with multiple post types that have the same relationship on a single page
- Redirect to another page using contact form 7? [closed]
- Meta-Boxes for CustomPostType cause PHP Errors and Notices in “Add New” view
- Category.php template for custom posts
- categories should be available across all custom post types
- PHP question: how to combine syntax?
- Loop increase number
- custom post for slider
- WP_Query Custom Post Type if Category ID Equals
- Navigate posts with different post type that are in the same categories
- Showing custom post type categories in the menu
- How to use a variable as a function name?
- Assigning a category to a custom post type in WordPress
- How exclude or skip post type with get_next_post_link
- Create short URL with auto 301 redirect
- Removing full title and breadcrumb header container for a specific post type
- Is it possible to use array_walk() to append terms to an array of posts?
- Show current user posts in custom post type query
- Custom Ratings for Theme, Proper way to Refactor Code and Clean up Template File
- post_content is stripping HTML when adding a new post? [closed]
- Using Wp_Query, Json to add Highcharts series data
- Template code to split a post and print a custom field?
- Displaying One Custom Post Type’s Content On Single Post of Another Custom Post Type
- Let users upload image(s) to the post from front end
- Foreach loop returning more than one item when querying taxonomy
- Function to erase every post from a taxonomy
- Menu’s breaking, now showing all page links on site
- Post type Echo code is repeating on homepage
- Show the categories the current post has
- redirect after submiting post for review
- set object terms after some some time of published post – functions.php
- php dynamic content inside shortcode
- Title and URL Error in Breadcrumb Navigation for Custom Post Types
- Check that a slug is present in the get_terms request
- Pagination not working in custom post type. Help
- How to add specific terms in a custom post type?
- Assigning categories to custom post types via a front-end form; only works for native post type
- Limit custom post type to the authors only on front-end!
- In the php, how can I have a category of a custom post type display?
- Create posts inside CPT post
- Persist meta box choices throughout all posts of same post type
- ACF field check value of field on all other articles
- Get meta values from parent post and save in child post
- Change Search display for Custom Post Type
- Custom Post By Category
- Stored meta from attachment, video length?
- Duplicate posts in my custom loop
- How to sort custom post’s category by id from the theme’s function.php?
- Getting a 404 on single custom post type page when using rewrite on a custom taxonomy
- How To Display Category list from Portfolio post type plugin?
- Featured image in custom post is being disabled
- Create 2-layered dropdown menus for custom taxonomy and custom post type
- Function not pulling image or text from custom post type
- How to call Shortcode categories for custom post types?
- Stop header code from showing in category page?
- Custom Loop for custom post type. Compare by meta_value?
- Code in custom widget queries all posts, when it should only query the current post
- Add HTML before a specific div?
- How to string lines from the_content() hook in WordPress?
- Comments are not working on Custom Post Type
- Add Category names to post lists of custom post type
- How to I add count of custom posts listed in a post as a prefix to its title
- add_rewrite_rule not working with custom post type
- How do loop categories post from according in WordPress? is it impossible to solve this problem?