Process not visible after deploy when using multiple KieBases

Issue

There is a process containing a sub-process and another project containing a parent-process with a "Reusable Subprocess" node to invoke the sub-process:

However, when the parent project is build in Business Central with Build & Deploy button, the Process-Management/Process-Definitions tab only lists the Sub-Process with a [Start] button, not the parent Process. The start button does indeed start the bare sub-process, which does work.

It was expected that also the Parent-process is listed with a [Start] button.
Both projects build/deploy successfully otherwise.

The KModules are configured as follows:

Parent kmodule.xml:

<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <kbase name="ParentBase" default="false" eventProcessingMode="stream" equalsBehavior="identity" packages="*" includes="SubBase">
    <ksession name="ParentSession" type="stateful" default="false" clockType="realtime"></ksession>
  </kbase>
</kmodule>

Subprocess kmodule.xml

<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <kbase name="SubBase" default="true" eventProcessingMode="stream" equalsBehavior="identity" packages="*">
    <ksession name="SubSession" type="stateful" default="true" clockType="realtime"></ksession>
  </kbase>
</kmodule>