I guess the only clues we have to go on so far are the published demos of the occupancy network, which we have seen in both FSD and Optimus thus far.
Maybe I'm the optimist in the room, but i very much doubt it would have an issue with detecting bay window and pot.
A tweak they may employ is to use more compute / higher resolution on occupancy network at low speeds and when reversing to deal with these finer details.
74cm by 34cm object, different colour to what's immediately behind it, and completely invisible. I think the phrase is "This is fine."