Similar to this thread:
https://toolset.com/forums/topic/custom-fields-not-saving-properly/
I have a Group of 100+ custom fields, mostly radio buttons. Now when I try to add a new field to the group, I click save and the new field disappears - the page loads after "saving" and the new field hasn't been added to the group.
Do I need to re-create the Group? Can I export and import the group rather than having to try and rebuild it manually? What might be causing this problem and is there some way to fix it without having to rebuild the group?
Also, where is the Debug info?! When I click on Types / Help, the word "Debug" does not appear anywhere on the page...
Debug is enabled in WordPress wp-config.php file:
define( 'WP_DEBUG', true );
Here you have more information about debugging options:
https://toolset.com/documentation/user-guides/debugging-types-and-views/
You probably have to increase the maximum number of posted variables in PHP, see the solution described in this FAQ entry. It is for a different problem but the same solution applies:
https://toolset.com/faq/why-do-i-get-a-500-server-error-when-editing-a-view/