Hole in nav mesh bounds volume

There is a hole in my nav mehs bounds volume from a blueprint. I deleted the blueprint and the hole is still there. I tried building the paths, moving the volume, deleting the volume building the paths and then adding another one in. NOTHING gets rid of this hole. Does anybody know how to fix this
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Same issue here

I’m getting this same issue on UE 5.5 preview and release on the Mac. Even when I delete the actor the collision remains. When I move the Actor it extends the collision. Building geometry or paths doesn’t help.
Any idea on cause and solution?