Rituals impossible to finish in the "Channel" Map

Title.

Terracota enemies revived by Ritual Altars never leave their "statue" state, thus being impossible to damage, kill, and preventing the ritual from finishing.
I have encountered this during a Ritual at a bottlenecked section of the map. It is now impossible to pass through, and I am forced to abandon it.

I checked every possible little nook in search of an enemy I've missed, but there's nothing left. Just the statues.