Bundle systemBundle = bundleContext.getBundle(0);
FrameworkWiring frameworkWiring = systemBundle.adapt(FrameworkWiring.class); 
frameworkWiring.refreshBundles(null);

What I see in log of bundle B.

2017-05-08 12:31:42,831 | DEBUG | xFrameworkWiring | ? | BundleEvent STOPPING - com.bundleB
2017-05-08 12:31:42,832 | DEBUG | xFrameworkWiring | ? | ServiceEvent UNREGISTERING - [java.lang.Object] - com.bundleB
2017-05-08 12:31:42,832 | DEBUG | xFrameworkWiring | ? | BundleEvent STOPPED - com.bundleB
2017-05-08 12:31:42,845 | DEBUG | xFrameworkWiring | ? | BundleEvent UNRESOLVED - com.bundleB
2017-05-08 12:31:42,885 | DEBUG | xFrameworkWiring | ? | BundleEvent RESOLVED - com.bundleB
2017-05-08 12:31:42,886 | DEBUG | xFrameworkWiring | ? | BundleEvent STARTING - com.bundleB
2017-05-08 12:31:43,164 | DEBUG | xFrameworkWiring | ? | ServiceEvent REGISTERED - [java.lang.Object] - com.bundleB

Please,note that bundleB didn't change state to STARTED. When I don't use in bundleB CDI
beans and CDI container is not created for bundleB then everything is ok - after bundleA
update and osgi refresh bundleB reaches STARTED state.

Is this a bug of weld or something else? This is some thread dump:

"weld-worker-3" #146 daemon prio=5 os_prio=0 tid=0x00007f3e08044000 nid=0x1dc8 waiting for monitor entry [0x00007f3dd867a000]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at org.jboss.weld.util.bytecode.ClassFileUtils.toClass2(ClassFileUtils.java:108)
	- waiting to lock <0x00000000fd03aa50> (a java.lang.Class for org.jboss.weld.util.bytecode.ClassFileUtils)
	at org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:97)
	at org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:491)
	at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:364)
	at org.jboss.weld.bean.builtin.AbstractFacadeBean.initializeAfterBeanDiscovery(AbstractFacadeBean.java:61)
	at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$AfterBeanDiscoveryInitializerFactory.doWork(ConcurrentBeanDeployer.java:136)
	at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$AfterBeanDiscoveryInitializerFactory.doWork(ConcurrentBeanDeployer.java:127)
	at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:63)
	at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:56)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

"weld-worker-1" #144 daemon prio=5 os_prio=0 tid=0x00007f3e08042800 nid=0x1dc6 in Object.wait() [0x00007f3dd967e000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:502)
	at org.apache.felix.framework.Felix.acquireGlobalLock(Felix.java:5332)
	- locked <0x00000000ed6de970> (a [Ljava.lang.Object;)
	at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:481)
	at org.apache.felix.framework.BundleWiringImpl.searchDynamicImports(BundleWiringImpl.java:1652)
	at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1552)
	at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79)
	at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:2018)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1925)
	at org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:978)
	at org.apache.xbean.osgi.bundle.util.DelegatingBundle.loadClass(DelegatingBundle.java:170)
	at org.apache.xbean.osgi.bundle.util.BundleClassLoader.loadClass(BundleClassLoader.java:75)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
	- locked <0x00000000fb14e428> (a org.ops4j.pax.cdi.weld.impl.util.BundleClassLoader)
	at org.ops4j.pax.cdi.weld.impl.util.BundleClassLoader.loadClass(BundleClassLoader.java:193)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.jboss.weld.util.bytecode.ClassFileUtils.toClass2(ClassFileUtils.java:108)
	- locked <0x00000000fd03aa50> (a java.lang.Class for org.jboss.weld.util.bytecode.ClassFileUtils)
	at org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:97)
	at org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:491)
	at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:364)
	at org.jboss.weld.bean.builtin.AbstractFacadeBean.initializeAfterBeanDiscovery(AbstractFacadeBean.java:61)
	at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$AfterBeanDiscoveryInitializerFactory.doWork(ConcurrentBeanDeployer.java:136)
	at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$AfterBeanDiscoveryInitializerFactory.doWork(ConcurrentBeanDeployer.java:127)
	at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:63)
	at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:56)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

"FelixFrameworkWiring" #17 daemon prio=5 os_prio=0 tid=0x00007f3e74410800 nid=0x1c6e waiting on condition [0x00007f3e5e579000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000000fb86f398> (a java.util.concurrent.FutureTask)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
	at java.util.concurrent.FutureTask.get(FutureTask.java:191)
	at java.util.concurrent.AbstractExecutorService.invokeAll(AbstractExecutorService.java:244)
	at org.jboss.weld.executor.AbstractExecutorServices.invokeAllAndCheckForExceptions(AbstractExecutorServices.java:43)
	at org.jboss.weld.executor.AbstractExecutorServices.invokeAllAndCheckForExceptions(AbstractExecutorServices.java:51)
	at org.jboss.weld.bootstrap.ConcurrentBeanDeployer.doAfterBeanDiscovery(ConcurrentBeanDeployer.java:113)
	at org.jboss.weld.bootstrap.BeanDeployment.afterBeanDiscovery(BeanDeployment.java:271)
	at org.jboss.weld.bootstrap.WeldStartup.deployBeans(WeldStartup.java:434)
	at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:83)
	- locked <0x00000000fad0fc60> (a org.jboss.weld.bootstrap.WeldBootstrap)
	at org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.createBeanManager(WeldCdiContainer.java:133)
	at org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.access$000(WeldCdiContainer.java:57)
	at org.ops4j.pax.cdi.weld.impl.WeldCdiContainer$1.call(WeldCdiContainer.java:98)
	at org.ops4j.pax.cdi.spi.AbstractCdiContainer.doWithClassLoader(AbstractCdiContainer.java:151)
	at org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.doStart(WeldCdiContainer.java:94)
	at org.ops4j.pax.cdi.spi.AbstractCdiContainer.start(AbstractCdiContainer.java:85)
	- locked <0x00000000facbf020> (a org.ops4j.pax.cdi.weld.impl.WeldCdiContainer)
	at org.ops4j.pax.cdi.extender.impl.CdiExtender.createContainer(CdiExtender.java:184)
	at org.ops4j.pax.cdi.extender.impl.CdiExtender.addingBundle(CdiExtender.java:133)
	- locked <0x00000000edd04c60> (a org.ops4j.pax.cdi.extender.impl.CdiExtender)
	at org.ops4j.pax.cdi.extender.impl.CdiExtender.addingBundle(CdiExtender.java:64)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)
	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
	at org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:916)
	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:835)
	at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:517)
	at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4541)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2172)
	at org.apache.felix.framework.Felix$RefreshHelper.restart(Felix.java:5063)
	at org.apache.felix.framework.Felix.refreshPackages(Felix.java:4253)
	at org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:188)
	at java.lang.Thread.run(Thread.java:745)