Turn on spool SQL and send me the output of the query that runs when you open the ASH Browser (with your filter set).
Also send me a screen shot of your filter.
I am not sure that I understand your P.S. question, but I hope this answers it: The filter settings for ASH Browser are controlled by the dialog that comes up when you click the Funnel icon at the top of the window (right next to the change session icon). The default setting is "not filtered", but the filter is remembered once you set it. If the icon is red, the filter is set. If the icon is grey, the filter is not set.