Sometimes I have been able to solve this by selecting one Wall and changing its Junction Order.
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This my standard method to model the facades.
I put all the elements of the facade on a layer with a different intersection number so that the walls used to model cladding and the wall of the building enclosure don't connect each other.
I had a similar problem when trying to create a vertical interlock with the base of one complex profile passing below the top of another complex profile.
Apple iMac Intel i9 / macOS Sonoma / AC27UKI (most recent builds.. if they work)