-------------------------------------------------------------------------------
Test set: org.openjdk.jmc.browser.uitest.CustomConnectionsTest
-------------------------------------------------------------------------------
Tests run: 7, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 154.7 s <<< FAILURE! – in org.openjdk.jmc.browser.uitest.CustomConnectionsTest
org.openjdk.jmc.browser.uitest.CustomConnectionsTest.renameConnection – Time elapsed: 21.49 s
org.openjdk.jmc.browser.uitest.CustomConnectionsTest.renameFolder – Time elapsed: 17.95 s
org.openjdk.jmc.browser.uitest.CustomConnectionsTest.nestedFoldersConnections – Time elapsed: 51.61 s
org.openjdk.jmc.browser.uitest.CustomConnectionsTest.editConnection – Time elapsed: 30.64 s <<< ERROR!
org.jemmy.JemmyException: Unable to find menu item conforming criteria Text = Disconnect (Object: Menu {Wrong Thread})
at org.jemmy.swt.SWTMenu.select(SWTMenu.java:177)
at org.jemmy.swt.SWTMenu.select(SWTMenu.java:153)
at org.jemmy.swt.SWTMenu.push(SWTMenu.java:98)
at org.jemmy.input.StringPopupOwner.push(StringPopupOwner.java:46)
at org.openjdk.jmc.test.jemmy.misc.wrappers.MCTree.contextChoose(MCTree.java:774)
at org.openjdk.jmc.test.jemmy.misc.wrappers.JvmBrowser.selectContextOption(JvmBrowser.java:662)
at org.openjdk.jmc.test.jemmy.misc.wrappers.JvmBrowser.disconnect(JvmBrowser.java:314)
at org.openjdk.jmc.browser.uitest.CustomConnectionsTest.editConnection(CustomConnectionsTest.java:128)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.apache.maven.surefire.api.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:137)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:148)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:88)
at org.eclipse.tycho.surefire.osgibooter.OsgiSurefireBooter.run(OsgiSurefireBooter.java:140)
at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.runTests(AbstractUITestApplication.java:51)
at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$0(E4Testable.java:79)
at java.base/java.lang.Thread.run(Thread.java:1583)
 
org.openjdk.jmc.browser.uitest.CustomConnectionsTest.validConnection – Time elapsed: 11.39 s <<< ERROR!
org.jemmy.JemmyException: Unable to find menu item conforming criteria Text = Disconnect (Object: Menu {Wrong Thread})
at org.jemmy.swt.SWTMenu.select(SWTMenu.java:177)
at org.jemmy.swt.SWTMenu.select(SWTMenu.java:153)
at org.jemmy.swt.SWTMenu.push(SWTMenu.java:98)
at org.jemmy.input.StringPopupOwner.push(StringPopupOwner.java:46)
at org.openjdk.jmc.test.jemmy.misc.wrappers.MCTree.contextChoose(MCTree.java:774)
at org.openjdk.jmc.test.jemmy.misc.wrappers.JvmBrowser.selectContextOption(JvmBrowser.java:662)
at org.openjdk.jmc.test.jemmy.misc.wrappers.JvmBrowser.disconnect(JvmBrowser.java:314)
at org.openjdk.jmc.browser.uitest.CustomConnectionsTest.validConnection(CustomConnectionsTest.java:98)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.openjdk.jmc.test.jemmy.MCUITestRule$1.evaluate(MCUITestRule.java:118)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.apache.maven.surefire.api.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:137)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:148)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:88)
at org.eclipse.tycho.surefire.osgibooter.OsgiSurefireBooter.run(OsgiSurefireBooter.java:140)
at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.runTests(AbstractUITestApplication.java:51)
at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$0(E4Testable.java:79)
at java.base/java.lang.Thread.run(Thread.java:1583)
I suspect this might be due to commit  39ddd1339e8fb4f231e80c137d0112415f22298a, but I haven't verified.

Run "mvn verify -P uitests" to reproduce.