Issue with decoding when element is nullable array

[AndyBond2007]

If you take the following array:

[ {"id": 1, "name" : "test", "tags" : ["tag1", "tag2"]}, {"id":2, "name":"test2", "tags":null}]

it fails on decode with the error: Expected to decode Array<Any> but found a null value instead.

the "tags" element is correctly defined in the model as [String]? and the swagger document shows it is nullable.

It its possible to get around this by using the SafeOptionalDecoding:true option, but I would not have expected that to be required.