This code from SemanticForms is the only instance of the "manifest_version": 2 that I found that tries to use merge_strategy, and it clearly fails because of the wrong variable used in the code. Fix is coming in a sec, and it will let us properly fix ZeroBanner config loading.
"sfgDatePickerSettings": { "value": { "@note": "See SF_DefaultInputSettings.php for allowed values", "FirstDate": null, ... }, "merge_strategy": "array_plus" }