Everything on my end seems to still be running fine. Well, apart from all the other plugins. In some situations, some other plugins can effect APL and some other plugins. Usually happens when loading the plugins, and is caused by a plugin loaded beforehand.
I’m still unsure if the query operations of the APL have been effected. Can you try deactivating all the other plugins one by one and see if that changes any thing. May want to try changing your theme to see if the list will reappear, since themes typically use the WP_Query class as well.
Is the APL preset unique in any way? You may need to include the preset being effected. The presets that I have aren’t triggering any errors, and I have tried a few methods that I thought would trigger it.
Either submit the json file in a zip at [email protected] or EkoJr – Issues & Support