The button does not appear again in a nested form that is part of

A few days ago, I was able to add records to a ref_rows table, but now it won’t show me the button again for just that field. I removed all validations, and it still won’t let me. What else do you suggest I check? The changes I was making were from the database in Google Sheet.

I restored the database and the app to a previous version, but the problem persisted.

Please show the column configuration you having issues with.