curtainwall copy leads to tiny doors

[kerry.mason]

Does anyone care to explain why, when I copy a curtainwall storefront w/ doors, it gets modified to have an additional mullion and half-sized doors?

[ws]

Not seen this particular behaviour - looks like a gridline got added which is why your doors shrunk -

but playing about with storefronts they seem to do odd things like add in extra gridlines and resize door gaps when altering the wall lengths.

Maybe it's a feature