Invalid startlevel ordering when startlevels are changed in Bundle Activator

ERROR: Bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] Error starting {qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2={}}-0 (org.osgi.framework.BundleException: Cannot start bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] because its start level is 30, which is greater than the framework's start level of 11.)
org.osgi.framework.BundleException: Cannot start bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] because its start level is 30, which is greater than the framework's start level of 11.
at org.apache.felix.framework.Felix.startBundle(Felix.java:2175)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
at java.lang.Thread.run(Thread.java:750)

package qivicon.felix;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.concurrent.Semaphore;
import org.junit.Test;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleException;
import org.osgi.framework.FrameworkEvent;
import org.osgi.framework.launch.Framework;
import org.osgi.framework.startlevel.BundleStartLevel;
import org.osgi.framework.startlevel.FrameworkStartLevel;
import aQute.launchpad.Launchpad;
import aQute.launchpad.LaunchpadBuilder;
public class TestStartLevels {
    final static LaunchpadBuilder    builder    = new LaunchpadBuilder().runfw("org.apache.felix.framework")
            .set("felix.log.level ", "4");
    private BundleContext            context;
    public static class ChangeSL implements BundleActivator{
        @Override
        public void start(BundleContext context) throws Exception {
            System.out.println("In BundleActivator.start: Changing start level of bundles with sl=11 to sl=30");
            for ( Bundle b : context.getBundles()) {
                BundleStartLevel sl = b.adapt(BundleStartLevel.class);
                int startLevel = sl.getStartLevel();
                if ( startLevel == 11)
                    sl.setStartLevel(30);
            }
        }
        @Override
        public void stop(BundleContext context) throws Exception {
            // TODO Auto-generated method stub
            
        }
        
    }
    @Test
    public void testFailingToSetStartLevelBecauseChanged() throws Exception {
        try (Launchpad lp = builder.nostart().create()) {
            context = lp.getFramework().getBundleContext();
            context.addFrameworkListener(fe -> event(fe, "for errors"));
            
            Bundle changer = lp.bundle().bundleActivator(ChangeSL.class).start();
            Bundle victim = lp.bundle().start();            
            setStartLevel(changer, 10);
            setStartLevel(victim, 11);
            Framework framework = lp.getFramework();
            FrameworkStartLevel fsl = framework.adapt(FrameworkStartLevel.class);
            fsl.setStartLevel(1, fe -> event(fe, "setting FW startLevel=1"));
            System.out.println("starting framework up to level 1");
            lp.start();
            Semaphore s = new Semaphore(0);
            System.out.println("reached 1, setting fw startlevel to 1000");
            fsl.setStartLevel(1000, fe -> {
                s.release();
                event(fe, "reached startlevel 1000");
            });
            s.acquire();
            System.out.print("the bundle is actually not started immediately: " );
             bundle(victim);
            assertThat(victim.getState()).isNotEqualTo(Bundle.ACTIVE);
            Thread.sleep(100);
            System.out.print("but a bit later it is " );
             bundle(victim);
            assertThat(victim.getState()).isEqualTo(Bundle.ACTIVE);
        }
    }
    private void bundle(Bundle b) {
        BundleStartLevel sl = b.adapt(BundleStartLevel.class);
        System.out.format("%02d %-20s %s\n", sl.getStartLevel(), b, state(b));
    }
    private void setStartLevel(Bundle b, int startlevel) throws BundleException {
        BundleStartLevel slb = b.adapt(BundleStartLevel.class);
        slb.setStartLevel(startlevel);
        b.start();
    }
    String state(Bundle b) {
        switch (b.getState()) {
        case Bundle.UNINSTALLED:
            return "UNINSTALLED";
        case Bundle.INSTALLED:
            return "INSTALLED";
        case Bundle.RESOLVED:
            return "RESOLVED";
        case Bundle.STARTING:
            return "STARTING";
        case Bundle.ACTIVE:
            return "ACTIVE";
        case Bundle.STOPPING:
            return "STOPPING";
        default:
            return "?" + b.getState();
        }
    }
    private void event(FrameworkEvent frameworkevent, String msg) {
    }
    String event(FrameworkEvent e) {
        switch (e.getType()) {
        case FrameworkEvent.ERROR:
            return "ERROR";
        case FrameworkEvent.INFO:
            return "INFO";
        case FrameworkEvent.PACKAGES_REFRESHED:
            return "PACKAGES_REFRESHED";
        case FrameworkEvent.STARTED:
            return "STARTED";
        case FrameworkEvent.STARTLEVEL_CHANGED:
            return "STARTLEVEL_CHANGED";
        case FrameworkEvent.STOPPED:
            return "STOPPED";
        case FrameworkEvent.STOPPED_BOOTCLASSPATH_MODIFIED:
            return "STOPPED_BOOTCLASSPATH_MODIFIED";
        case FrameworkEvent.STOPPED_UPDATE:
            return "STOPPED_UPDATE";
        case FrameworkEvent.WAIT_TIMEDOUT:
            return "WAIT_TIMEDOUT";
        default:
            return "?" + e.getType();
        }
    }
}

 
starting framework up to level 1
reached 1, setting fw startlevel to 1000
In BundleActivator.start: Changing start level of bundles with sl=11 to sl=30
ERROR: Bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] Error starting {qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2={}}-0 (org.osgi.framework.BundleException: Cannot start bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] because its start level is 30, which is greater than the framework's start level of 11.)
org.osgi.framework.BundleException: Cannot start bundle qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] because its start level is 30, which is greater than the framework's start level of 11.
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2175)
    at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1539)
    at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
    at java.lang.Thread.run(Thread.java:750)
the bundle is actually not started immediately30 qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] INSTALLED
but a bit later it is 30 qivicon.felix.TestStartLevels.testFailingToSetStartLevelBecauseChanged-2 [2] ACTIVE