ResetInputPhaseListener does not ignore render ids which starts with an '@'

[cchet]

Should the class ResetInputPhaseListener not ignore render ids which start with an '@' ?
Such as:
@ALL
@Form
@none
...

In my opinion no component can be found with such an id.
I faced this issue with

<p:ajax event="dragdrop" listener="#{handlingUnitWebBean.handleDragDrop}" update="@none"
global="false" />

where it seems that the phase listener tries to resolve a component with render id @none.
I always get the following warning:

[24.09.14 12:14:13:202 CEST] 000000cf SystemOut O 953481 WARN [WebContainer : 17] com.clevercure.web.core.application.listener.ResetInputPhaseListener - Could not find component with id '@none' in view '/Core/Colli/handling_unit.xhtml'