SpringBoot Binder does not work when referencing kebab-case property by camelCase naming

I setup an example config project (https://github.com/lorenzbaier/spring-config-server-client-test/blob/spring-bootrap-binder-case-sensitive/client/src/main/resources/application.yml)

The config looks like the following:

my-config-base:
  passWord: dummy-password-needed
  another-value: dummy-password-needed

another-config:
  value1: ${my-config-base.pass-word}
  value2: ${my-config-base.another-value}
  value3: ${my-config-base.passWord}
  value4: ${my-config-base.anotherValue} # DOES NOT WORK because casing seems to be broken in binder

This will then result in the following:

LOOK HERE AT THIS config: AnotherConfig(value1=dummy-password-needed, value2=dummy-password-needed, value3=dummy-password-needed, value4=${my-config-base.anotherValue})

Notice that value4 could not be bound but all the other combinations work

Comment From: philwebb

This is expected behavior because those references are loaded in the same way as @Value(...). You can refer to other values in their original form (${my-config-base.passWord}) or in kebab case (${my-config-base.pass-word}, ${my-config-base.another-value}).

There is a small note about this in the documentation.