First off, love the plugin. It’s very intuitive and effective.
Unfortunately, I’ve run into a situation recently wherein the capabilities for the “Gravity Forms Add Ons” are all missing. If you refer to this screenshot – https://i.imgur.com/GfplmXW.png – you’ll see the Gravity Forms Add Ons” section exists, however no capabilities show despite the fact we have a large number of Gravity Forms Add Ons.
I’m not entirely sure if I’m missing something on my end or that this could potentially be a Gravity Forms issue.
“Gravity Forms Add-Ons” section is provided by Gravity Forms itself via GFAddOn (includes/addon/class-gf-addon.php) class.
My test showed that this group is filled by caps as expected. I may suppose that some active add-on can break the data structures used for this. Try to deactivate temporary all GF addons and activate them back one by one with test repeated to check if this is true assumption and isolate a conflict.