No DEBUG logs appear from Java XML Digital Signature API

[xperjon]

Hi!
I'm trying to use the Java XML Digital Signature API (https://www.oracle.com/technical-resources/articles/java/dig-signature-api.html) together with Quarkus 3.2.4. As stated in the Oracle article to enable debug logging you have to set the following log levels:

org.jcp.xml.dsig.internal.level = FINER
com.sun.org.apache.xml.internal.security.level = FINER

From that I assume JDK java.util.logging (JUL) is used. From the Quarkus logging documentation (https://quarkus.io/guides/logging) I understand that this should be handled by the JBoss Log Manager. No need for extra dependencies - just configure log levels in application.properties.
But when I try with the following:

quarkus.log.level=TRACE
quarkus.log.min-level=TRACE

quarkus.log.category."org.jcp.xml.dsig.internal".level=TRACE
quarkus.log.category."org.jcp.xml.dsig.internal".min-level=TRACE
quarkus.log.category."com.sun.org.apache.xml.internal.security".level=TRACE
quarkus.log.category."com.sun.org.apache.xml.internal.security".min-level=TRACE

I only get debug logs from quarkus itself and nothing from org.jcp.xml.dsig.internal or com.sun.org.apache.xml.internal.security.

I've made a reproducer here: https://github.com/xperjon/quarkus-xml-dsig

Anyone have an idea what could be the problem?