ignoreUnknownFields allows to spot cases where a property on the target namespace was left unbound. It is an interesting feature with a serious limitation (#3445) that means we hardly use it in practice.
We should consider deprecating it in the next feature release.
Comment From: snicoll
Trying to come up with a deprecated message for this, I think it would be more fair to deprecate it when we tackle #10030
Comment From: thombergs
I noticed that ignoreUnknownFields=false does not work when ignoreInvalidFields is set to true.
It seems that as soon as invalid fields are ignored, unknown fields are also ignored, no matter what the value of ignoreUnknownFields, which is not what I would expect.
Since ignoreUnknownFields will be deprecated, I didn't want to raise a new issue, but wanted to document it here in case anyone else stumbles upon this.
Comment From: philwebb
@thombergs We're going to fix the issue you mention in #22308