Random Loose Vertex or Edge?

Hello All

I’ve modelled an archway, which in Edit mode looks fine >>

But when I switch to Object mode there is a random edge that projects out into the centre. I’ve tried to find what is causing it but as far as I can tell there is no vertex there or loose geometry here.

Any ideas as to what it might be?



A thought: enable On Cage and Edit Mode options in all the modifiers for this object. It should make the object look like it would in Object Mode. If so, you should be able to see and select that edge.