The Project Deephole Affair - S2-E26
Continuity mistake: When Solo is escorting Narcissus downstairs, they go through a door that's hinged on the right and opens inward into the stairwell. Cut to them entering, and the door is now hinged on the opposite side and has opened outward into the hall. (00:42:30)
Answer: He must have ridden in an Eaton's store elevator while he was in Canada at some point. For some reason, this elevator reminds him of it. The show's original concept had Solo being a Canadian, so this may be a minor nod to that fact.
raywest ★