In Portfolio item tree and Kanban Boards, we can filter by number of Blocking Issues, which will filter to find Portfolio Items with blocks on them directly, which is great. Since we have the ability to display the number of Rollup blocking items on the Tree grid and on a Kanban board card, it would be good to have the ability to filter these 2 views by the "rollup blocking issues" too. Sometimes the Portfolio Item will not have a block, but the number of blocks on the backlog below it may be cause for inspection.

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