Custom Entity's Custom Fields doesn't show in when trying to Add Field in Views I've created a custom entity and allowed administrators to add custom fields to this entity using the "Manage Fields" Form; however, the custom fields I add to the entity does not appear in the list that pops up when trying to "Add Fields" in a view.

How does one go about making custom fields appear in the Views?
I ran into this just today. Turns out you shouldn't set data_table in the entity type annotation if translatable is FALSE. Otherwise views associates all of the fields with the data_table, but data_table is never associated with base_table due to translations being disabled.