As of a few days ago the intermediate root chain check fails for the Telia Sonera root CA v1 cert with:

java.lang.RuntimeException: Intermediate Root CA not found in the chain
        at ValidatePathWithURL.validateAnchor(ValidatePathWithURL.java:212)
        at ValidatePathWithURL.validateDomainCertChain(ValidatePathWithURL.java:161)
        at ValidatePathWithURL.validateDomain(ValidatePathWithURL.java:128)
        at CAInterop.validate(CAInterop.java:788)
        at CAInterop.main(CAInterop.java:726)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1575)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Intermediate Root CA not found in the chain