IDEA 2016 jPBM plugin / XML problem

Something in jBPM plugin for IDEA 2016 seems to be broken - when I place cursor at XmlAttributeValue in JPDL file then many actions does not work, i.e. word selection (Ctrl + W), reference resolving (maybe reason is the same as in this post), even "Search action" action (Ctrl + Shift + A) does not work... When I move cursor somewhere else, then those actions works fine.

Also, when I'm debugging my plugin I see following errors (my plugin is not related with jBPM plugin):

[ 72641] ERROR - aemon.impl.PassExecutorService - com/intellij/psi/impl/source/jsp/el/ELUtil
java.lang.NoClassDefFoundError: com/intellij/psi/impl/source/jsp/el/ELUtil
at com.intellij.jboss.jpdl.el.JpdlElInjector.getLanguagesToInject(JpdlElInjector.java:39)
at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:82)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:474)
at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:62)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:316)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:145)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass$2.process(InjectedGeneralHighlightingPass.java:191)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass$2.process(InjectedGeneralHighlightingPass.java:186)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:128)
at com.intellij.concurrency.ApplierCompleter.access$000(ApplierCompleter.java:44)
at com.intellij.concurrency.ApplierCompleter$1.run(ApplierCompleter.java:91)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1178)
at com.intellij.concurrency.ApplierCompleter$2.run(ApplierCompleter.java:100)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:443)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:112)
at com.intellij.concurrency.ApplierCompleter.compute(ApplierCompleter.java:88)
at jsr166e.CountedCompleter.exec(CountedCompleter.java:684)
at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:260)
at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:858)
at jsr166e.ForkJoinPool.scan(ForkJoinPool.java:1687)
at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1642)
at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
Caused by: java.lang.ClassNotFoundException: com.intellij.psi.impl.source.jsp.el.ELUtil PluginClassLoader[JBPM, 2.0.0]
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:64)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more
[ 72677] ERROR - aemon.impl.PassExecutorService - IntelliJ IDEA 2016.1.3 Build #IU-145.1617.8
[ 72677] ERROR - aemon.impl.PassExecutorService - JDK: 1.8.0_91
[ 72677] ERROR - aemon.impl.PassExecutorService - VM: Java HotSpot(TM) 64-Bit Server VM
[ 72677] ERROR - aemon.impl.PassExecutorService - Vendor: Oracle Corporation
[ 72677] ERROR - aemon.impl.PassExecutorService - OS: Windows 7
[ 72677] ERROR - aemon.impl.PassExecutorService - Last Action:
[ 72677] ERROR - aemon.impl.PassExecutorService - com/intellij/psi/impl/source/jsp/el/ELUtil
java.lang.NoClassDefFoundError: com/intellij/psi/impl/source/jsp/el/ELUtil
at com.intellij.jboss.jpdl.el.JpdlElInjector.getLanguagesToInject(JpdlElInjector.java:39)
at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:82)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:474)
at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:62)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:316)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:145)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass$2.process(InjectedGeneralHighlightingPass.java:191)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass$2.process(InjectedGeneralHighlightingPass.java:186)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:128)
at com.intellij.concurrency.ApplierCompleter.access$000(ApplierCompleter.java:44)
at com.intellij.concurrency.ApplierCompleter$1.run(ApplierCompleter.java:91)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1178)
at com.intellij.concurrency.ApplierCompleter$2.run(ApplierCompleter.java:100)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:443)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:112)
at com.intellij.concurrency.ApplierCompleter.compute(ApplierCompleter.java:88)
at jsr166e.CountedCompleter.exec(CountedCompleter.java:684)
at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:260)
at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:858)
at jsr166e.ForkJoinPool.scan(ForkJoinPool.java:1687)
at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1642)
at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
Caused by: java.lang.ClassNotFoundException: com.intellij.psi.impl.source.jsp.el.ELUtil PluginClassLoader[JBPM, 2.0.0]
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:64)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more