Toolbar VerticalSection button callbacks fail due to eventdata

[rjackey]

I added a vertical section with 3 buttons and then pressed one. I got this error:

warning: Error occurred while executing the listener callback for event ButtonPushed defined for class
wt.toolbar.VerticalSection:
Unrecognized function or variable 'evtOut'.

Error in wt.toolbar.HorizontalSection/onButtonPushed (line 119)
            addprop(evtOut,'Section');
                    ^^^^^^
Error in wt.toolbar.HorizontalSection>@(h,e)onButtonPushed(obj,e) (line 102)
                @(h,e)onButtonPushed(obj,e) );
                      ^^^^^^^^^^^^^^^^^^^^^
Error in wt.toolbar.VerticalSection/onButtonPushed (line 92)
            notify(obj,"ButtonPushed",evtOut);
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in wt.toolbar.BaseSection>@(h,e)onButtonPushed(obj,e) (line 91)
            button.ButtonPushedFcn = @(h,e)onButtonPushed(obj,e);
                                           ^^^^^^^^^^^^^^^^^^^^^ 
> In wt.toolbar/VerticalSection/onButtonPushed (line 92)
In wt.toolbar.BaseSection>@(h,e)onButtonPushed(obj,e) (line 91)
In appdesservices.internal.interfaces.model/AbstractModel/executeUserCallback (line 282)
In matlab.ui.control.internal.controller/ComponentController/handleUserInteraction (line 442)
In matlab.ui.control.internal.controller/PushButtonController/handleEvent (line 96)
In appdesservices.internal.interfaces.controller.AbstractController>@(varargin)obj.handleEvent(varargin{:}) (line 229)
In viewmodel.internal.factory.ManagerFactoryProducer>@(src,event)callback(src,viewmodel.internal.factory.ManagerFactoryProducer.convertStructToEventData(event)) (line 76) 
119             addprop(evtOut,'Section');