RS in forum messages list if the selected list is empty

2017-09-05 15:43:05,637 [ajp-nio2-8005-exec-1106] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N5-E114 ^%^ org.olat.core.logging

https://olat.xyz.ch/auth/RepositoryEntry/453378054/CourseNode/95832833158384/Message/455278738
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko ^%^ **RedScreen** Index: 0, Size: 0

<dispatchinfo>
	<componentinfo>
		<compname>ffo_main_barebone</compname>
		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.components.form.flexible.impl.elements.table.SelectionEvent</class&gt;
			<command>select</command>
			<tostring>com:select,org.olat.core.gui.components.form.flexible.impl.elements.table.SelectionEvent@c9ff351b</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.modules.fo.ui.ForumMessageListController</controllername>
		<controllername>org.olat.modules.fo.ui.MessageListController</controllername>
		<controllername>org.olat.modules.fo.ui.ForumController</controllername>
		<controllername>org.olat.course.nodes.fo.FOCourseNodeRunController</controllername>
		<controllername>org.olat.course.run.RunMainController</controllername>
		<controllername>org.olat.course.run.CourseRuntimeController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>
 
>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: Index: 0, Size: 0
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:116)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:57)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:46)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:549)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:242)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:273)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:190)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:292)
   at org.olat.core.servlets.OpenOLATServlet.doPost(OpenOLATServlet.java:235)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
>>> stack of 2.cause::java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
-> at java.util.ArrayList.rangeCheck(ArrayList.java:653)
   at java.util.ArrayList.get(ArrayList.java:429)
   at org.olat.modules.fo.ui.MessageListController.doSelectTheOne(MessageListController.java:1304)
   at org.olat.modules.fo.ui.MessageListController.event(MessageListController.java:887)
   at org.olat.core.gui.control.DefaultController$1.run(DefaultController.java:246)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:243)
   at org.olat.core.gui.control.DefaultController.fireEvent(DefaultController.java:190)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.fireEvent(FormBasicController.java:711)
   at org.olat.modules.fo.ui.ForumMessageListController.formInnerEvent(ForumMessageListController.java:227)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.event(FormBasicController.java:430)