Karaf container doesn't respect Camel's DefaultShutdownStrategy timeout if pending camel route is Spring DM bundle

Issue

When shutting down a JBoss Fuse standalone container with a pending Camel route, Karaf forcefully shuts down much quicker than 300 seconds Camel's DefaultShutdownStrategy timeout if the pending camel route is a Spring DM camel bundle. Although for blueprint camel bundles, Karaf does respect Camel's DefaultShutdownStrategy timeout and it will wait for 300 seconds elapse before shutting down.

Is there a reason why Karaf container doesn't respect Camel's DefaultShutdownStrategy timeout for Spring camel route? Is there a solution for it?