IncludeBase MapFrom in 12.0.1

[kakone]

With the new version 12.0.1, some mappings with IncludeBase fail. It worked well in version 12.0.0.
When configuration.AssertConfigurationIsValid(); is called, I get the message : Unmapped properties: Date although the date is well mapped.
You can reproduce the problem with this code : https://github.com/kakone/AutoMapperIncludeBase

Mapping configuration

cfg.CreateMap<Foo, FooDto>()
    .IncludeBase<FooBase, FooDtoBase>();

cfg.CreateMap<FooBase, FooDtoBase>()
    .IncludeBase<FooBaseBase, FooDtoBaseBase>();

cfg.CreateMap<FooBaseBase, FooDtoBaseBase>()
   .ForMember(d => d.Date, o => o.MapFrom(s => s.Today ? (DateTime?)DateTime.Today : null));

Version: 12.0.1

Expected behavior

No exception when AssertConfigurationIsValid is called

Actual behavior

AssertConfigurationIsValid fail with unmapped properties message

Steps to reproduce

https://gist.github.com/kakone/ad2c0607f69b618d9527c92031cb9f57

[lbargaoanu]

A repro would help. Make a gist that we can execute and see fail. Translate your code in the required format.

[kakone]

https://gist.github.com/kakone/ad2c0607f69b618d9527c92031cb9f57

[lbargaoanu]

Try the MyGet build.

[kakone]

Try the MyGet build.

Tried and approved

[github-actions]

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