Bug #1: The panorama effect (at least for level 5 skyscrapers) is often wrongly updated after downgrading several adjacent skyscrapers of the same level simultaneously. Reloading the game does not resolve this problem. However, applying the move tool to the bugged skyscrapers (without changing their positions) fixes the issue.
Bug #2: There is a level of detail issue for L-shaped skyscrapers (the skyscrapers at the corners of a block), which causes the skyscraper to disappear if the camera is too far away. However, from this distance all other buildings and even I-shaped skyscrapers are still visible.
Bug #3: The newly introduced stores also all have the same level of detail issue as the L-shaped skyscrapers; they disappear if the camera is too far away, while all other buildings are still visible.