EDIT

Found in nightly build 4.3.

Please check also for other types. I checked HomotypicalGroups and it was ok. For Taxon and TaxonName it is also ok as they offer bulk editors.

Also for Teams it works, while TaxonDescriptions have the same problem as TaxonNameDescriptions.

TaxonNodes generally work but trying to open the ChecklistEditor throws an exception (see below):

login : admin
editor version : 4.3.0.201609080950
server : test.e-taxonomy.eu / edit-test
schema version : 4.0.0.0.201604200000
os : Windows Server 2012 6.2 amd64
java : 1.7.0_65
org.eclipse.swt.SWTException: Graphic is disposed
    at org.eclipse.swt.SWT.error(SWT.java:4282)
    at org.eclipse.swt.SWT.error(SWT.java:4197)
    at org.eclipse.swt.SWT.error(SWT.java:4168)
    at org.eclipse.swt.graphics.Image.getBounds(Image.java:1164)
    at org.eclipse.swt.custom.CTabFolderRenderer.computeSize(CTabFolderRenderer.java:286)
    at org.eclipse.swt.custom.CTabFolder.setItemSize(CTabFolder.java:2405)
    at org.eclipse.swt.custom.CTabFolder.updateItems(CTabFolder.java:3347)
    at org.eclipse.swt.custom.CTabFolder.showItem(CTabFolder.java:3217)
    at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2737)
    at org.eclipse.ui.internal.presentations.PaneFolder.setSelection(PaneFolder.java:732)
    at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.setSelection(DefaultTabFolder.java:256)
    at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:282)
    at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
    at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
    at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
    at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
    at org.eclipse.ui.internal.WorkbenchPage.internalBringToTop(WorkbenchPage.java:866)
    at org.eclipse.ui.internal.WorkbenchPage.internalActivate(WorkbenchPage.java:690)
    at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:663)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2957)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2850)
    at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2842)
    at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2793)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2789)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2773)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2756)
    at eu.etaxonomy.taxeditor.editor.EditorUtil.open(EditorUtil.java:80)
    at eu.etaxonomy.taxeditor.editor.EditorUtil.open(EditorUtil.java:131)
    at eu.etaxonomy.taxeditor.editor.handler.OpenChecklistEditorHandler.open(OpenChecklistEditorHandler.java:48)
    at eu.etaxonomy.taxeditor.editor.handler.OpenChecklistEditorHandler.open(OpenChecklistEditorHandler.java:1)
    at eu.etaxonomy.taxeditor.handler.defaultHandler.DefaultOpenHandlerBase.execute(DefaultOpenHandlerBase.java:30)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at eu.etaxonomy.taxeditor.view.CdmViewerContextMenu$CommandInvoker.widgetSelected(CdmViewerContextMenu.java:109)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at eu.etaxonomy.taxeditor.Application.start(Application.java:24)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Applied in changeset taxeditor:commit:taxeditor|f3fb72fdaf40e993eeec1f606bfd88caeba06898.

Though #5616 is not yet fully fixed I think we can close this ticket now.