Cannot start Java 11 with JMX enabled in Ubuntu

[mauromol]

When trying to start a Spring Boot app with a JRE locally installed in the host system (under /run/host/usr/lib/jvm/java-11-openjdk-amd64), I get the following exception on startup:

Error: Config file not found: /run/host/usr/lib/jvm/java-11-openjdk-amd64/conf/management/management.properties

That file actually exists, but it's a symlink that points to /etc/java-11-openjdk/management/management.properties, which is probably not "visible" to the flatpak (it should be mapped to /run/host/etc/java-11-openjdk/management/management.properties). If I disable JMX, it works instead, but this disables Spring Boot app Lifecycle Management.

Is there a workaround?