Probably the order of properties change triggering will affect the others. 
It depends on how you connected the presenters originally (aka: clearContent will maybe trigger something, etc.).

Esteban

On 29 Mar 2020, at 17:56, Hilaire <hilaire@drgeo.eu> wrote:

I resolved the issue, but it looks counter intuitive. Any rational?

connectPresenters 
    scripts whenSelectedItemChanged: [ :class | 
        source clearContent; behavior: nil.
        class ifNotNil: [ 
            methods resetAllPageContents.
            (methods pageAt: 1) whenRetrievedDo: [ :list  |  list  items:  class methods].
            (methods pageAt: 2) whenRetrievedDo: [ :list  | list  items:  class class methods].
            methods resetAllPageContents.]].

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Dr. Geo
http://drgeo.eu