[the_other_guy]

But when I create my own node (e.g. Concerts) and add two widgets to it (category disabled) I cannot navigate down.
In fact it's impossible to reach the second row.

this is because the number range is not the same or out of order

xml:
<include content="WidgetListPoster" condition="Library.HasContent(movies) + !Skin.HasSetting(hide_recentlymovies)">

       <param name="content_path" value="$VAR[HideWatchedMoviesFromRecentlyVar]"/>

       <param name="widget_header" value="$LOCALIZE[20386]"/>

       <param name="widget_header_focus" value="$INFO[Container(5100).ListItem.Title, | ]$INFO[Container(5100).ListItem.Year, (,)]"/>

       <param name="widget_target" value="videos"/>

       <param name="list_id" value="5100"/>

      </include>

look at list_id" value="" it needs to be higher than the above widget (5100)
and lower then the widget below (5200)

xml:
<include content="WidgetListPoster" condition="Library.HasContent(movies) + !Skin.HasSetting(hide_inprogressmovies)">

       <param name="content_path" value="special://skin/playlists/inprogress_movies.xsp"/>

       <param name="widget_header" value="$LOCALIZE[31010]"/>

       <param name="widget_header_focus" value="$INFO[Container(5200).ListItem.Title, | ]$INFO[Container(5200).ListItem.Year, (,)]"/>

       <param name="widget_target" value="videos"/>

       <param name="list_id" value="5200"/>

      </include>

on the original Estuary if the number rangeis 5100 and you use say 6110 it will not work
or if it is a lower number then the widget above it will not go to that widget