NPE in CSS Editor on jquery css

Unhandled event loop exception

java.lang.NullPointerException
	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocumentRegion.getFullText(BasicStructuredDocumentRegion.java:151)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.getCollapsedText(CSSDeclarationItemParser.java:1092)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.makeString(CSSDeclarationItemParser.java:873)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.createStringValue(CSSDeclarationItemParser.java:539)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.createPrimitiveValue(CSSDeclarationItemParser.java:392)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.setupValues(CSSDeclarationItemParser.java:1021)
	at org.eclipse.wst.css.core.internal.document.CSSDeclarationItemParser.setupValues(CSSDeclarationItemParser.java:969)
	at org.eclipse.wst.css.core.internal.document.CSSStyleDeclItemImpl.setCssValueTextCore(CSSStyleDeclItemImpl.java:260)
	at org.eclipse.wst.css.core.internal.document.CSSStyleDeclItemImpl.setCssValueText(CSSStyleDeclItemImpl.java:234)
	at org.eclipse.wst.css.core.internal.document.CSSStyleDeclarationImpl.setProperty(CSSStyleDeclarationImpl.java:267)
	at org.jboss.tools.jst.css.dialog.common.CSSModel.updateCSSStyle(CSSModel.java:297)
	at org.jboss.tools.jst.css.dialog.CSSClassDialog.handleSelectorSwitched(CSSClassDialog.java:250)
	at org.jboss.tools.jst.css.dialog.CSSClassDialog$1.modifyText(CSSClassDialog.java:152)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:179)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1392)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1416)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1397)
	at org.eclipse.swt.widgets.Combo.select(Combo.java:1738)
	at org.jboss.tools.jst.css.dialog.CSSClassDialog.updateControlPane(CSSClassDialog.java:377)
	at org.jboss.tools.jst.css.dialog.CSSClassDialog.createContents(CSSClassDialog.java:99)
	at org.eclipse.jface.window.Window.create(Window.java:432)
	at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1104)
	at org.eclipse.jface.window.Window.open(Window.java:791)
	at org.jboss.tools.jst.css.dialog.OpenCSSDialogActionDelegate.run(OpenCSSDialogActionDelegate.java:70)
	at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
	at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1392)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3742)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3363)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	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:354)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)