SoapUI 5.3: exceptions thrown when trying to edit http method parameters (part 2)

Second part of the "SoapUI 5.3: exceptions thrown when trying to edit http method parameters" - first part called "SmartBear 5.3: exceptions thrown when trying to edit http method parameters (part 1)"

Please find below the remaining exception that did not fit in the first post:

Wed Jun 21 09:40:05 CEST 2017:ERROR:java.lang.NullPointerException
   java.lang.NullPointerException
   	at com.eviware.soapui.impl.rest.support.RestRequestParamsPropertyHolder$InternalRestParamProperty.<init>(RestRequestParamsPropertyHolder.java:465)
   	at com.eviware.soapui.impl.rest.support.RestRequestParamsPropertyHolder.getWrapper(RestRequestParamsPropertyHolder.java:408)
   	at com.eviware.soapui.impl.rest.support.RestRequestParamsPropertyHolder.getPropertyAt(RestRequestParamsPropertyHolder.java:210)
   	at com.eviware.soapui.impl.rest.support.RestUtils.makeMatrixParameterString(RestUtils.java:242)
   	at com.eviware.soapui.impl.rest.support.RestUtils.makeSuffixParameterString(RestUtils.java:236)
   	at com.eviware.soapui.impl.rest.panels.request.ParametersField.<init>(ParametersField.java:65)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestDesktopPanel.initializeFields(RestRequestDesktopPanel.java:54)
   	at com.eviware.soapui.impl.support.panels.AbstractHttpRequestDesktopPanel.init(AbstractHttpRequestDesktopPanel.java:165)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestDesktopPanel.init(RestRequestDesktopPanel.java:62)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestDesktopPanel.init(RestRequestDesktopPanel.java:36)
   	at com.eviware.soapui.impl.support.panels.AbstractHttpRequestDesktopPanel.<init>(AbstractHttpRequestDesktopPanel.java:128)
   	at com.eviware.soapui.impl.support.panels.AbstractHttpXmlRequestDesktopPanel.<init>(AbstractHttpXmlRequestDesktopPanel.java:46)
   	at com.eviware.soapui.impl.rest.panels.request.AbstractRestRequestDesktopPanel.<init>(AbstractRestRequestDesktopPanel.java:61)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestDesktopPanel.<init>(RestRequestDesktopPanel.java:45)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestPanelBuilder.buildDesktopPanel(RestRequestPanelBuilder.java:38)
   	at com.eviware.soapui.impl.rest.panels.request.RestRequestPanelBuilder.buildDesktopPanel(RestRequestPanelBuilder.java:33)
   	at com.eviware.soapui.ui.desktop.standalone.StandaloneDesktop.showDesktopPanel(StandaloneDesktop.java:197)
   	at com.eviware.soapui.support.UISupport.showDesktopPanel(UISupport.java:557)
   	at com.eviware.soapui.support.UISupport.selectAndShow(UISupport.java:546)
   	at com.eviware.soapui.impl.wsdl.actions.support.ShowDesktopPanelAction.perform(ShowDesktopPanelAction.java:49)
   	at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:93)
   	at com.eviware.soapui.support.action.swing.DefaultActionList.performDefaultAction(DefaultActionList.java:96)
   	at com.eviware.soapui.support.action.swing.DefaultActionList.dispatchKeyEvent(DefaultActionList.java:107)
   	at com.eviware.soapui.ui.Navigator$TreeKeyListener.keyPressed(Navigator.java:226)
   	at java.awt.AWTEventMulticaster.keyPressed(Unknown Source)
   	at java.awt.Component.processKeyEvent(Unknown Source)
   	at javax.swing.JComponent.processKeyEvent(Unknown Source)
   	at java.awt.Component.processEvent(Unknown Source)
   	at java.awt.Container.processEvent(Unknown Source)
   	at java.awt.Component.dispatchEventImpl(Unknown Source)
   	at java.awt.Container.dispatchEventImpl(Unknown Source)
   	at java.awt.Component.dispatchEvent(Unknown Source)
   	at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
   	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
   	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
   	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
   	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
   	at java.awt.Component.dispatchEventImpl(Unknown Source)
   	at java.awt.Container.dispatchEventImpl(Unknown Source)
   	at java.awt.Window.dispatchEventImpl(Unknown Source)
   	at java.awt.Component.dispatchEvent(Unknown Source)
   	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
   	at java.awt.EventQueue.access$200(Unknown Source)
   	at java.awt.EventQueue$3.run(Unknown Source)
   	at java.awt.EventQueue$3.run(Unknown Source)
   	at java.security.AccessController.doPrivileged(Native Method)
   	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
   	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
   	at java.awt.EventQueue$4.run(Unknown Source)
   	at java.awt.EventQueue$4.run(Unknown Source)
   	at java.security.AccessController.doPrivileged(Native Method)
   	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
   	at java.awt.EventQueue.dispatchEvent(Unknown Source)
   	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
   	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
   	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
   	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   	at java.awt.EventDispatchThread.run(Unknown Source)

 Thanks.