Description When creating a TypeAdapter for a parent class with extra="allow", then calling type_adapter.dump_python or type_adapter.dump_json on a subclass, the subclass's fields are ignored despite ...

This issue came up with NJT a few weeks ago (I believe @jbschlosser worked around it but we should fix this). Say you are in the following situation: (1) you are compiling a model where one of the ...