I think I can assure you that, wherever the Eucharist is validly confected, if there's a problem, it's not because Christ is absent.
If there is a spiritual issue going on with any of the church leadership, priests, ect, can the Eucharist in that Catholic church or “bread and wine” as served in Protestant churches be said to be “properly confected”, blessed, prayed for...ect? Where the Spirit of the Lord is, there is Liberty....otherwise there is only spiritual paucity and bondage!