Won't generate grails date picker

In the views directory _fields I have several widgets and wrappers. The one for a date picker has this line in it: That way I can specify everything from the domain class - how the date is displayed, the precision of the date picker, etc.
This is the error when it tries to generate the GSP: Error executing tag : Error evaluating expression [constraints.attributes.precision] on line [7]: No such property: attributes for class: org.grails.scaffolding.model.property.Constrained I looked at the code on GitHub and can't find attributes as a property. At the moment I've fallen back on the old _form.gsp template.

Start with the date-picker wrapper under the views directory _fields and reproduce GSP generation using the reported f:all error. Trace how org.grails.scaffolding.model.property.Constrained exposes constraint data, then compare the fallback _form.gsp template. Done means generated GSP succeeds and the date picker still receives the configured display, precision, and years values.

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