Enabling Animated Menus breaks widget tabbing

[AndyTechGuy]

When animated menus are enabled, the widget tabbing will show strange activity in the main menu:

• On the main menu, the widget tabbing works.
• When an animation forward to any menu occurs the first time, widget tabbing doesn't work and returns an error in console.
• Any other forward animation after that will result in the tabbing not working without an error in console.
• But, when a backwards animation occurs, the widget tabbing works again!

Log

The console shows this error on the first forward animation:

[main] ERROR o.t.e.event.internal.EventSystemImpl - Failed to invoke event
java.lang.NullPointerException: null
    at org.terasology.rendering.nui.AbstractWidget.onBindEvent(AbstractWidget.java:303)
    at org.terasology.rendering.nui.internal.NUIManagerInternal.bindEvent(NUIManagerInternal.java:678)
    at org.terasology.rendering.nui.internal.NUIManagerInternalMethodAccess.invoke(Unknown Source)
    at org.terasology.entitySystem.event.internal.EventSystemImpl$ByteCodeEventHandlerInfo.invoke(EventSystemImpl.java:531)
    at org.terasology.entitySystem.event.internal.EventSystemImpl.sendConsumableEvent(EventSystemImpl.java:301)
    at org.terasology.entitySystem.event.internal.EventSystemImpl.send(EventSystemImpl.java:280)
    at org.terasology.entitySystem.entity.internal.BaseEntityRef.send(BaseEntityRef.java:204)
    at org.terasology.input.internal.BindableButtonImpl.updateBindState(BindableButtonImpl.java:163)
    at org.terasology.input.InputSystem.updateBindState(InputSystem.java:310)
    at org.terasology.input.InputSystem.processKeyboardInput(InputSystem.java:381)
    at org.terasology.input.InputSystem.update(InputSystem.java:135)
    at org.terasology.engine.modes.StateMainMenu.handleInput(StateMainMenu.java:196)
    at org.terasology.engine.subsystem.lwjgl.LwjglInput.postUpdate(LwjglInput.java:55)
    at org.terasology.engine.TerasologyEngine.tick(TerasologyEngine.java:467)
    at org.terasology.engine.TerasologyEngine.mainLoop(TerasologyEngine.java:421)
    at org.terasology.engine.TerasologyEngine.run(TerasologyEngine.java:397)
    at org.terasology.engine.Terasology.main(Terasology.java:156)

[AlexandrSunLight]

I can say, that it's not a NullPointerException problem. When animation is on TabbingManager gets wrong information about menu screen (in case of forward animation only). After first transition (from main menu to anything else) TabbingManager gets NewGameScreen, and MainMenuScreen after second.