Annotate class with @testCase action not working in PhpStorm 2021.3 EAP

[washeck]

I'm using PhpStorm 2021.3 EAP

PhpStorm 2021.3 EAP
Build #PS-213.5281.20, built on October 21, 2021
PhpStorm EAP User
Expiration date: November 20, 2021
Runtime version: 11.0.12+7-b1751.11 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Linux 5.11.0-38-generic
GC: G1 Young Generation, G1 Old Generation
Memory: 1988M
Cores: 8
Registry:
    run.processes.with.pty=TRUE

Non-Bundled Plugins:
    cz.jiripudil.intellij.nette.tester (2.1.0)
    com.jantvrdik.intellij.latte (1.1.3)
    Nette framework helpers (0.4.5)
    NEON support (0.5.1)
    com.intellij.lang.jsgraphql (3.0.0)

Current Desktop: Unity:Unity7:ubuntu

When I try to fix an inspection error Test case should have @testCase annotation using the Annotate class with @testCase nothing happens and there is a new exception in the IDE event log:

java.lang.ClassCastException: class com.intellij.psi.impl.source.tree.LeafPsiElement cannot be cast to class com.jetbrains.php.lang.psi.elements.PhpClass (com.intellij.psi.impl.source.tree.LeafPsiElement is in unnamed module of loader com.intellij.util.lang.PathClassLoader @26ba2a48; com.jetbrains.php.lang.psi.elements.PhpClass is in unnamed module of loader com.intellij.ide.plugins.cl.PluginClassLoader @78530004)
	at cz.jiripudil.intellij.nette.tester.inspections.TestCaseAnnotationInspection$AnnotateTestCaseQuickFix.applyFix(TestCaseAnnotationInspection.java:60)
	at cz.jiripudil.intellij.nette.tester.inspections.TestCaseAnnotationInspection$AnnotateTestCaseQuickFix.applyFix(TestCaseAnnotationInspection.java:43)
	at com.intellij.codeInspection.ex.QuickFixWrapper.invoke(QuickFixWrapper.java:74)
	at com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler.lambda$invokeIntention$4(ShowIntentionActionsHandler.java:263)
	at com.intellij.openapi.application.WriteAction.lambda$run$1(WriteAction.java:86)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteActionWithClass(ApplicationImpl.java:935)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:961)
	at com.intellij.openapi.application.WriteAction.run(WriteAction.java:85)
	at com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler.invokeIntention(ShowIntentionActionsHandler.java:263)
	at com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler.lambda$chooseActionAndInvoke$3(ShowIntentionActionsHandler.java:239)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:219)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:174)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:164)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:150)
	at com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler.chooseActionAndInvoke(ShowIntentionActionsHandler.java:238)
	at com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler.chooseActionAndInvoke(ShowIntentionActionsHandler.java:222)
	at com.intellij.codeInsight.daemon.impl.DaemonTooltipAction.execute(DaemonTooltipActionProvider.kt:54)
	at com.intellij.codeInsight.daemon.impl.DaemonTooltipWithActionRenderer$addActionsRow$runFixAction$1.invoke(DaemonTooltipWithActionRenderer.kt:148)
	at com.intellij.codeInsight.daemon.impl.DaemonTooltipWithActionRenderer$addActionsRow$runFixAction$1.invoke(DaemonTooltipWithActionRenderer.kt:50)
	at com.intellij.codeInsight.daemon.impl.DaemonTooltipWithActionRendererKt$createActionLabel$1.hyperlinkActivated(DaemonTooltipWithActionRenderer.kt:372)
	at com.intellij.ui.HyperlinkAdapter.hyperlinkUpdate(HyperlinkAdapter.java:11)
	at com.intellij.ui.HyperlinkLabel.fireHyperlinkEvent(HyperlinkLabel.java:240)
	at com.intellij.ui.HyperlinkLabel.processMouseEvent(HyperlinkLabel.java:162)
	at java.desktop/java.awt.Component.processEvent(Component.java:6419)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5029)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2790)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4861)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:891)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:820)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:757)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:447)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:818)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:446)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:805)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:498)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)