P: Filter images in a collapsed stack

In LR Library module, Grid view, if you filter on a KW (Keyword), it does not show you images that are burried in collapsed stacks (see screen shot attached). As it stands, the only way to find these images is to turn off all the filters, select all photos in the catalog, then Expand All Stacks (thereby erasing all the hard work done collapsing some stacks and expanding others) then re-filter on the keyword.

I would like to see an option or some means that will either

a) show all images that match the filter regardless of stacking state, or

b) once a filter is applied, click something to "expand all stacks containing images matching filter"

Thanks -- Dan