container query cache is not invalidated

60 r24653

I have some cache isses with the template pressReleases in webtemplates.
New containers are not immediately displayed, and manually flushing page cache is not always enough.
I have removed the container query from containers/pressContent/pressDisplay.jsp
Then, I have no problem, new containers are displayed as soon as page is refreshed.
so, it seems that query result cache is not flushed when a new container is added in list.