[Inkscape-user] only 1 filter possible when grouped?

When you group several items, Can you do only 1 filter?

I tried it, and I can only do 1, until I ungroup the items.. then I can apply several filters to it.

(I have 25 squares, and wanted Button and Bloom) All selected then it works, but if I am grouping them first, then I can only apply 1, and I don't see The effect of the other ones.

Is there a way to do it, without having it ungrouped ?

Thank you