I am having the same problem. Can’t save field data. I can add fields via manage > extras. The fields are correctly added under manage > Details. I can then fill in the >Details fields with text and press Save.
After Save I get the message “Group Details were Successfully Updated”, however now the Extras fields on the manage > Details page are empty. (Note I did a test and changed the group name and description too before saving. These changes are correct (the standard fields update properly) however the Extras fields are just empty.) When I go to the Extras page the fields are there as expected in a table, the the content of the fields are blank.
Thoughts?
One other question, the settings page has a selector to enable Rich Text Editor for both Extras fields and pages. This works on Pages but on Fields I just get plain text. I don’t see anywhere where the fields I add can be Rich Text. I want to create a field on the Details page that is a URL link but seem to only be able to enter plain text on the Group Extras > Add Listings area. Am I missing something?