Error with aliased attr's into dasherized strings- Unable to update record with "no implicit conversion of nil into Hash" error

I am running into an issue when attempting to save records with properties that have been aliased into a dasherized string.

I have a model like this:

# models/location.rb
class Location < ApplicationRecord
  alias_attribute :numberOfColors, :number_of_colors__c
end

And my resource:

# resources/location_resource.rb:
class LocationResource < JSONAPI::Resource
  attributes :numberOfColors
end

Sending a patch request like so returns the error no implicit conversion of nil into Hash.

{  
  "data":{  
    "id":"somerecordid",
    "attributes":{  
      "colors": 3,
    },
    "type":"locations"
  }
}

• If I skip the aliasing and pass in the attr as number-of-colors--c everything works as expected.
• If I name the attr colors everything works as expected.

Start by reproducing the PATCH request using models/location.rb and resources/location_resource.rb, then compare the aliased dasherized attribute with the working unaliased cases described in the issue. Trace the attribute update path until the nil-to-Hash error is identified; done means saving through the alias succeeds without the error while the existing working cases remain intact.