DG 8 client certificate authentication doesn't work with HTTP/2

Issue

Data Grid cluster in OCP that is managed by Data Grid Operator. The cluster is configured to use client certificate authentication in "Authenticate" mode.
Using a Spring Boot application the authentication works fine. However, after importing the client certificate into a browser, the Web Console doesn't load - and returns blank page.
The server throws the following error:

14:03:59,374 ERROR (non-blocking-thread--p2-t2) [org.infinispan.rest.RestRequestHandler] ISPN012005: An error occurred while responding to the client java.util.concurrent.CompletionException: java.lang.RuntimeException: org.wildfly.security.http.HttpAuthenticationException: ELY05053: Callback handler failed for unknown reason
    at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
    at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1702)
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.RuntimeException: org.wildfly.security.http.HttpAuthenticationException: ELY05053: Callback handler failed for unknown reason
    at org.infinispan.server.security.ElytronHTTPAuthenticator.lambda$challenge$0(ElytronHTTPAuthenticator.java:120)
    at org.infinispan.util.concurrent.BlockingManagerImpl.lambda$supplyBlockingOperation$3(BlockingManagerImpl.java:149)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700)
    ... 5 more
Caused by: org.wildfly.security.http.HttpAuthenticationException: ELY05053: Callback handler failed for unknown reason
    at org.wildfly.security.mechanism._private.MechanismUtil.handleCallbacks(MechanismUtil.java:160)
    at org.wildfly.security.http.cert.ClientCertAuthenticationMechanism.attemptAuthentication(ClientCertAuthenticationMechanism.java:120)
    at org.wildfly.security.http.cert.ClientCertAuthenticationMechanism.evaluateRequest(ClientCertAuthenticationMechanism.java:94)
    at org.wildfly.security.http.util.SetMechanismInformationMechanismFactory$1.evaluateRequest(SetMechanismInformationMechanismFactory.java:119)
    at org.wildfly.security.auth.server.http.SecurityIdentityServerMechanismFactory$1.evaluateRequest(SecurityIdentityServerMechanismFactory.java:84)
    at org.infinispan.server.security.ElytronHTTPAuthenticator.lambda$challenge$0(ElytronHTTPAuthenticator.java:101)
    ... 7 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
    at org.wildfly.security.evidence.X509PeerCertificateChainEvidence.getFirstCertificate(X509PeerCertificateChainEvidence.java:94)
    at org.wildfly.security.evidence.X509PeerCertificateChainEvidence.getDefaultPrincipal(X509PeerCertificateChainEvidence.java:59)
    at org.wildfly.security.evidence.X509PeerCertificateChainEvidence.getDefaultPrincipal(X509PeerCertificateChainEvidence.java:31)
    at org.wildfly.security.auth.server.SecurityDomain$Builder.lambda$new$2(SecurityDomain.java:839)
    at org.wildfly.security.auth.server.ServerAuthenticationContext.setDecodedEvidencePrincipal(ServerAuthenticationContext.java:778)
    at org.wildfly.security.auth.server.ServerAuthenticationContext$UnassignedState.verifyEvidence(ServerAuthenticationContext.java:1699)
    at org.wildfly.security.auth.server.ServerAuthenticationContext.verifyEvidence(ServerAuthenticationContext.java:767)
    at org.wildfly.security.auth.server.ServerAuthenticationContext$1.handleOne(ServerAuthenticationContext.java:1021)
    at org.wildfly.security.auth.server.ServerAuthenticationContext$1.handle(ServerAuthenticationContext.java:868)
    at org.wildfly.security.auth.server.http.SecurityIdentityServerMechanismFactory$SecurityIdentityCallbackHandler.handle(SecurityIdentityServerMechanismFactory.java:125)
    at org.wildfly.security.mechanism._private.MechanismUtil.handleCallbacks(MechanismUtil.java:156)
    ... 12 more