Use strict check for is null, as it otherwise causes empty arrays to not have any field #2604
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Because
null == []is true in php, fields which are empty arrays (for example for Checkboxes) were not present in theTWILL.store.form.fieldsThis causes issues with
connectedFieldswhich expect the field to always be an array ifarrayContainsis set to false and so the field does not appear when it's expected to when loading the page (until you check and uncheck a checkbox)