Not the same functionality as traditional custom fields

A typical theme that we use allows editors to use any number of specific custom fields to add additional content to a page, such as a field for microdata. There are quite a number of possible fields but it would be rare to use more than just a few, so it’s pretty unweildly to be presented with a complete list of all possible choices. Such a list might be useable if presented in the traditional way on a pulldown list, but as this plugin stands now it’s fairly cumbersome.

At first i could not find the custom fields at all, until i realized that they are only visible in the visual editor — somewhere i rarely go when working on a site.

With this plugin, custom fields are only available for new posts, but not for existing content. And there does not appear to be any way with this plugin to access existing custom fields on existing content or to add new custom fields to existing content.

With some improvements this might be a good tool for new sites that use Gutenberg from the get-go, but it is completely dysfunctional for existing sites.