I have a form with a related list of records. However, there seems to be some issues with the grid displaying when it is configured to only show related records. It just will not show up on the form.

It is on the form editor correctly.

When the grid is changed to an Editable Sub-grid, it still doesn't appear on the Form AND it throws an error in the UCI form editor.

I've cleared browser data and had another developer test and experienced the same issue. This is a custom entity to custom entity 1:N relationship. The are other editable grids working in the same application. Should I try and delete and recreate the entity? Could the relationship be somehow broken on the back-end?