failure extracting null to None when strict and disallow-nulls are specified

[yoganandc]

json4s version

4.0.6

scala version

2.13.5

jdk version

openjdk version "1.8.0_282"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_282-b08)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.282-b08, mixed mode)

I have a definition

case class Test(t: Option[String])

The json

{"t": null}

is extracted successfully below

implicit val formats: Formats = DefaultFormats.strict
read[Test](j)

// val res8: Test = Test(None)

and here too

implicit val formats: Formats = DefaultFormats.withExtractionNullStrategy(ExtractionNullStrategy.Disallow)
read[Test](j)

// val res9: Test = Test(None)

but not when i combine both

implicit val formats: Formats = 
  DefaultFormats.withExtractionNullStrategy(ExtractionNullStrategy.Disallow).strict
read[Test](j)

// org.json4s.MappingException: No usable value for t
// Did not find value which can be converted into java.lang.String
//   at org.json4s.reflect.package$.fail(package.scala:56)

I would like to have both. Am I misunderstanding the intentions behind these flags or is this a bug?